13428256 has 24 divisors (see below), whose sum is σ = 26565084. Its totient is φ = 6681600.

The previous prime is 13428241. The next prime is 13428263. The reversal of 13428256 is 65282431.

It can be written as a sum of positive squares in 2 ways, for example, as 11696400 + 1731856 = 3420^2 + 1316^2 .

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, 6556 + ... + 8356.

Almost surely, 2^13428256 is an apocalyptic number.

13428256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13428256 is a deficient number, since it is larger than the sum of its proper divisors (13136828).

13428256 is a wasteful number, since it uses less digits than its factorization.

13428256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2044 (or 2036 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 13428256 is about 3664.4584865980. The cubic root of 13428256 is about 237.6876065217.

The spelling of 13428256 in words is "thirteen million, four hundred twenty-eight thousand, two hundred fifty-six".