Numbers 850,000,000s

A page of the Numeropedia - the Special Encyclopedia of Numbers

[1M] & [10M] & [100M- [200M] - [300M] - [400M] - [500M] - [600M] - [700M] - [800M] - [900M]  & [1B]

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850,363,921

[Math.]  Sum of the first 241 cube numbers:

13+23+…+2413 = 850,363,921 = (1+2+…+241)2 = 29,1612.

853,107,264

[Math.]  292082 = 853,107,264, the largest one of 22 squares using all 9 digits 0-8 once.

854,917,632

[Language]  The 9-digit number whose digits are distinct and in the English alphabetical consecutive order.

855,036,081

[Math.] (1+2+…+18)4 = [(15+25+…+185)+(17+27+…+187)]/2.

858,993,459

[Math.] A regular polygon with this odd number (product of Fermat prime numbers) of sides is constructible by using only straightedge and compass. 858,993,459 = 3×17×257×65,537.

xyz,abc,def

[Math.]  For any xyz = 100 to 999, there are always six 6-digit numbers abc,edf such that the sum (xyz+abc,def) is equal to one of 6 digit-rotations of 142,857 and the number  xyz,abc,def is a multiple of 142,857.

For any xyz = 100 to 999, there are always twelve 6-digit numbers abc,edf such that the sum (xyz+abc,def) is equal to one of 12 digit-rotations of 076,923 or 153,846 and the number xyz,abc,def is a multiple of 76,923.