12907256 has 8 divisors (see below), whose sum is σ = 24201120. Its totient is φ = 6453624.

The previous prime is 12907241. The next prime is 12907259. The reversal of 12907256 is 65270921.

It is a tau number, because it is divible by the number of its divisors (8).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12907259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806696 + ... + 806711.

It is an arithmetic number, because the mean of its divisors is an integer number (3025140).

Almost surely, 2^12907256 is an apocalyptic number.

It is an amenable number.

12907256 is a deficient number, since it is larger than the sum of its proper divisors (11293864).

12907256 is a wasteful number, since it uses less digits than its factorization.

12907256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613413 (or 1613409 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 12907256 is about 3592.6669759386. Note that the first 3 decimals coincide. The cubic root of 12907256 is about 234.5729743200.

The spelling of 12907256 in words is "twelve million, nine hundred seven thousand, two hundred fifty-six".