12971256 has 16 divisors (see below), whose sum is σ = 32428200. Its totient is φ = 4323744.

The previous prime is 12971249. The next prime is 12971261. The reversal of 12971256 is 65217921.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

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, 270211 + ... + 270258.

Almost surely, 2^12971256 is an apocalyptic number.

It is an amenable number.

12971256 is an abundant number, since it is smaller than the sum of its proper divisors (19456944).

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

12971256 is a wasteful number, since it uses less digits than its factorization.

12971256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540478 (or 540474 counting only the distinct ones).

The product of its digits is 7560, while the sum is 33.

The square root of 12971256 is about 3601.5629940347. The cubic root of 12971256 is about 234.9600414933.

The spelling of 12971256 in words is "twelve million, nine hundred seventy-one thousand, two hundred fifty-six".