Numbers 23,000,000s

A page of the Numeropedia - the Special Encyclopedia of Numbers

20,000,000 21,000,00022,000,00023,000,000 – 24,000,000

25,000,00026,000,00027,000,00028,000,00029,000,000

All Numbers  & [1M] & [10M- [20M] - [30M] - [40M] - [50M] - [60M] - [70M] - [80M] - [90M] &  [100M]

1  - 10 - 100  - 1000 - 10,000 - 100,000 - 1M - 10M - 100M1B10B - 100B - 1T - 10T - 100T - 1Q ...

23,030,090 

[Math.]  A pair of amicable numbers (21448630, 23030090).

 

23,047,035 

[Math.]  Two consecutive sums of consecutive square numbers:

23,047,035 = 9902+…+10122 = 10132+…+10342.

 

23,111,055

[Math.]  A pair of amicable numbers (22508145, 23111055).

 

23,348,224

[Math.]  The number 4832 and 48322 = 23,348,224 has the same digits.

 

23,358,248

[Math.]  A pair of amicable numbers (23358248, 25233112).

 

23,389,695

[Math.]  A pair of amicable numbers (23389695, 25132545).

 

23,399,339

[Math.]  A right-truncatable prime number: self, 2339933, 233993, 23399, 2339, 233, 23 and 2 are prime numbers.

 

23,456,789

[Math.]  One of only two 8-digit prime numbers whose digits are consecutive (including digit 0). The other such prime number is: 45,678,901. The smallest prime number formed by 8 consecutive numbers (also with strictly increasing digits).

 

[Math.]  Number 23,456,789 misses one digit 1 in 9 digits 1-9:

23,456,789×2 = 46,913,578 misses one digit 2 (modulo 9)

23,456,789×4 = 93,827,156 misses one digit 4 (modulo 9).

 

23,532,201

[Math.]  Sum of the first 98 cube numbers:

13+23+…+973+983 = 23,532,201 = (1+2+…+97+98)2 = 48512.

 

23,628,940

[Math.]  A pair of amicable numbers (23628940, 27428276).

 

23,639,903

[Math.] 

23,639,903 = (023–639+903)3 = 2873.

 

23,804,641

[Math.]  23,804,641 = (238+04641)2 = 48792. 

 

xy,abc,def

[Math.]  For any xy = 10 to 99, there are always six 6-digit numbers abc,edf such that the sum (xy+abc,def) is equal to one of 6 digit-rotations of 142,857 and the number xy,abc,def is a multiple of 142,857.

 

For any xy = 10 to 99, there are always twelve 6-digit numbers abc,edf such that the sum (xy+abc,def) is equal to one of 12 digit-rotations of 076,923 or 153,846 and the number xy,abc,def is a multiple of 76,923.