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12687460268 = 2274007113083
BaseRepresentation
bin10111101000011101…
…10100011110101100
31012202012200202112212
423310032310132230
5201440442212033
65454544145552
7626256430040
oct136416643654
935665622485
1012687460268
11542081675a
1225610082b8
131272703352
14885050020
154e3cb7748
hex2f43b47ac

12687460268 has 24 divisors (see below), whose sum is σ = 25381477632. Its totient is φ = 5436077904.

The previous prime is 12687460267. The next prime is 12687460297. The reversal of 12687460268 is 86206478621.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12687460267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55655 + ... + 168737.

It is an arithmetic number, because the mean of its divisors is an integer number (1057561568).

Almost surely, 212687460268 is an apocalyptic number.

It is an amenable number.

12687460268 is an abundant number, since it is smaller than the sum of its proper divisors (12694017364).

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

12687460268 is a wasteful number, since it uses less digits than its factorization.

12687460268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117101 (or 117099 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 50.

The spelling of 12687460268 in words is "twelve billion, six hundred eighty-seven million, four hundred sixty thousand, two hundred sixty-eight".

Divisors: 1 2 4 7 14 28 4007 8014 16028 28049 56098 112196 113083 226166 452332 791581 1583162 3166324 453123581 906247162 1812494324 3171865067 6343730134 12687460268