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12687301460 = 225634365073
BaseRepresentation
bin10111101000011100…
…01101101101010100
31012202012101200201002
423310032031231110
5201440422121320
65454540522432
7626255166041
oct136416155524
935665350632
1012687301460
115420718409
122560b50418
131272678c92
1488500c1c8
154e3c85675
hex2f438db54

12687301460 has 12 divisors (see below), whose sum is σ = 26643333108. Its totient is φ = 5074920576.

The previous prime is 12687301453. The next prime is 12687301481. The reversal of 12687301460 is 6410378621.

It can be written as a sum of positive squares in 2 ways, for example, as 4638699664 + 8048601796 = 68108^2 + 89714^2 .

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, 317182517 + ... + 317182556.

It is an arithmetic number, because the mean of its divisors is an integer number (2220277759).

Almost surely, 212687301460 is an apocalyptic number.

12687301460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12687301460 is an abundant number, since it is smaller than the sum of its proper divisors (13956031648).

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

12687301460 is a wasteful number, since it uses less digits than its factorization.

12687301460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634365082 (or 634365080 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 12687301460 in words is "twelve billion, six hundred eighty-seven million, three hundred one thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 634365073 1268730146 2537460292 3171825365 6343650730 12687301460