13056840 has 48 divisors (see below), whose sum is σ = 42435900. Its totient is φ = 3481728.

The previous prime is 13056839. The next prime is 13056863. The reversal of 13056840 is 4865031.

13056840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12236004 + 820836 = 3498^2 + 906^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17775 + ... + 18494.

Almost surely, 2^13056840 is an apocalyptic number.

13056840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13056840 is an abundant number, since it is smaller than the sum of its proper divisors (29379060).

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

13056840 is a wasteful number, since it uses less digits than its factorization.

13056840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36286 (or 36279 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 13056840 is about 3613.4249680878. The cubic root of 13056840 is about 235.4756624883.

The spelling of 13056840 in words is "thirteen million, fifty-six thousand, eight hundred forty".