12856470 has 32 divisors (see below), whose sum is σ = 33661440. Its totient is φ = 3116640.

The previous prime is 12856469. The next prime is 12856489. The reversal of 12856470 is 7465821.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19150 + ... + 19809.

It is an arithmetic number, because the mean of its divisors is an integer number (1051920).

Almost surely, 2^12856470 is an apocalyptic number.

12856470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12856470 is an abundant number, since it is smaller than the sum of its proper divisors (20804970).

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

12856470 is a wasteful number, since it uses less digits than its factorization.

12856470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38980.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 12856470 is about 3585.5920013298. The cubic root of 12856470 is about 234.2649129219.

The spelling of 12856470 in words is "twelve million, eight hundred fifty-six thousand, four hundred seventy".