Numbers 83,000,000s

A page of the Numeropedia - the Special Encyclopedia of Numbers

80,000,000 81,000,00082,000,00083,000,000 – 84,000,000

85,000,00086,000,00087,000,00088,000,00089,000,000

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 ...

 83,135,650

[Math.]  A pair of amicable numbers (83135650, 85603550).

 

83,453,453

[Math.]  4373 = 83,453,453.

 

83,623,935 & 83,623,936 & 83,623,937

[Math.]  j(83,623,935) = 41,811,968 and 41,811,968×2 = 83,623,935+1.

j(83,623,935×83,623,937) = 41,811,968×83,623,936 also divides the number (83,623,935×83,623,937+1) = 83,623,9362, where φ is the Euler’s totient function.

 

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.