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12793717460 = 225639685873
BaseRepresentation
bin10111110101001000…
…01010001011010100
31020000121122012000102
423322210022023110
5202200142424320
65513301433232
7632016542546
oct137244121324
936017565012
1012793717460
1154757a1317
12259070b818
13128b727c24
148951cd696
154ed2a6175
hex2fa90a2d4

12793717460 has 12 divisors (see below), whose sum is σ = 26866806708. Its totient is φ = 5117486976.

The previous prime is 12793717457. The next prime is 12793717483. The reversal of 12793717460 is 6471739721.

It can be written as a sum of positive squares in 2 ways, for example, as 9268683076 + 3525034384 = 96274^2 + 59372^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319842917 + ... + 319842956.

It is an arithmetic number, because the mean of its divisors is an integer number (2238900559).

Almost surely, 212793717460 is an apocalyptic number.

12793717460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12793717460 is an abundant number, since it is smaller than the sum of its proper divisors (14073089248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12793717460 is a wasteful number, since it uses less digits than its factorization.

12793717460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639685882 (or 639685880 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 47.

The spelling of 12793717460 in words is "twelve billion, seven hundred ninety-three million, seven hundred seventeen thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 639685873 1279371746 2558743492 3198429365 6396858730 12793717460