13428032256 has 108 divisors (see below), whose sum is σ = 40150451432. Its totient is φ = 4475990016.

The previous prime is 13428032239. The next prime is 13428032257. The reversal of 13428032256 is 65223082431.

13428032256 is a `hidden beast` number, since 1 + 3 + 4 + 280 + 322 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (108).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 13428032256.

It is not an unprimeable number, because it can be changed into a prime (13428032257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45721 + ... + 170136.

Almost surely, 2^13428032256 is an apocalyptic number.

13428032256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13428032256 is an abundant number, since it is smaller than the sum of its proper divisors (26722419176).

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

13428032256 is an frugal number, since it uses more digits than its factorization.

13428032256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215888 (or 215862 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 13428032256 in words is "thirteen billion, four hundred twenty-eight million, thirty-two thousand, two hundred fifty-six".