Numbers 380,000,000s

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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380,367,009

[Math.]  Sum of the first 197 cube numbers:

13+23+…+1973 = 380,367,009 = (1+2+…+197)2 = 19,5032.

382,716,049

[Math.]  Multiples of 012345679 by 4, 13, 22, 31, 40, 49, 58, 67 and 76 will yield all 9 rotations of 049382716: 049382716, 160493827, 271604938, 382716049, 493827160, 604938271, 716049382, 827160493 and 938271604. All numbers are missing digit 5.

382,945,761

[Math.]  195692 = 382,945,761, one of thirty 9-digit square numbers using all 9 digits 1-9 once.

383,838,383

[Math.]  An alternating-digit prime number.

384,529,340

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

384,529,340 = 30812+…+31202 = 31212+…+31592.

385,297,641

[Math.]  196292 = 385,297,641, one of thirty 9-digit square numbers using all 9 digits 1-9 once.

387,420,489

[Math.]  A number powered by itself: 99 = 387,420,489. The largest number which can be expressed by using just one symbol, 9.

388,129,401

[Math.]  Sum of the first 198 cube numbers:

13+23+…+1983 = 388,129,401 = (1+2+…+198)2 = 19,7012.

388,247,185

[Math.]  388,247,185 = 11+33+55+77+99.

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.