Numbers 40,000,000s

A page of the Numeropedia - the Special Encyclopedia of Numbers

40,000,000 41,000,00042,000,00043,000,00044,000,000

45,000,00046,000,00047,000,00048,000,00049,000,000

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

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40,043,584

[Math.]  Sum of the first 112 cube numbers:

13+23+…+1113+1123 = 40,043,584 = (1+2+…+111+112)2 = 63282.

 

40,105,845

[Math.]  A pair of amicable numbers (35373195, 40105845).

 

40,117,714

[Math.]  A pair of amicable numbers (35361326, 40117714).

 

40,393,939

[Math.]  40,393,939, 39,403,939 and 39,394,039 are all prime numbers.

 

40,578,660

[Math.]  40,578,660 = 2×2×3×3×5×17×89×149, where each digit 1-9 appears exactly twice. 

 

40,640,625

[Math.]  63752 = 40,640,625.

 

40,678,184

[Math.]  A pair of amicable numbers (38637016, 40678184).

 

40,744,977

[Math.]  40,744,977 = 24+36+58+79.

 

40,912,232

[Math.]  A pair of amicable numbers (38807968, 40912232).

 

40,998,409 

[Math.]  64032 = 40,998,409. 

 

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.