12956478 has 16 divisors (see below), whose sum is σ = 26268816. Its totient is φ = 4259520.

The previous prime is 12956477. The next prime is 12956491. The reversal of 12956478 is 87465921.

12956478 is nontrivially palindromic in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12956477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14353 + ... + 15228.

It is an arithmetic number, because the mean of its divisors is an integer number (1641801).

Almost surely, 2^12956478 is an apocalyptic number.

12956478 is an abundant number, since it is smaller than the sum of its proper divisors (13312338).

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

12956478 is a wasteful number, since it uses less digits than its factorization.

12956478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29659.

The product of its digits is 120960, while the sum is 42.

The square root of 12956478 is about 3599.5108000949. The cubic root of 12956478 is about 234.8707785117.

The spelling of 12956478 in words is "twelve million, nine hundred fifty-six thousand, four hundred seventy-eight".