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12907137 = 3191271783
BaseRepresentation
bin110001001111…
…001010000001
3220021202021010
4301033022001
511301012022
61140351133
7214465065
oct61171201
926252233
1012907137
117316361
1243a54a9
13289bb79
1419ddaa5
1511ee50c
hexc4f281

12907137 has 16 divisors (see below), whose sum is σ = 18268160. Its totient is φ = 8083152.

The previous prime is 12907133. The next prime is 12907151. The reversal of 12907137 is 73170921.

It is not a de Polignac number, because 12907137 - 22 = 12907133 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12907133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6348 + ... + 8130.

It is an arithmetic number, because the mean of its divisors is an integer number (1141760).

Almost surely, 212907137 is an apocalyptic number.

It is an amenable number.

12907137 is a deficient number, since it is larger than the sum of its proper divisors (5361023).

12907137 is a wasteful number, since it uses less digits than its factorization.

12907137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1932.

The product of its (nonzero) digits is 2646, while the sum is 30.

The square root of 12907137 is about 3592.6504143877. The cubic root of 12907137 is about 234.5722534265.

The spelling of 12907137 in words is "twelve million, nine hundred seven thousand, one hundred thirty-seven".

Divisors: 1 3 19 57 127 381 1783 2413 5349 7239 33877 101631 226441 679323 4302379 12907137