13056520 has 32 divisors (see below), whose sum is σ = 30064320. Its totient is φ = 5100480.

The previous prime is 13056499. The next prime is 13056541. The reversal of 13056520 is 2565031.

13056520 = T₈₅ + T₈₆ + ... + T₄₂₈.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13056499) and next prime (13056541).

It is a junction number, because it is equal to n+sod(n) for n = 13056491 and 13056500.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2076 + ... + 5515.

It is an arithmetic number, because the mean of its divisors is an integer number (939510).

Almost surely, 2^13056520 is an apocalyptic number.

13056520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13056520 is an abundant number, since it is smaller than the sum of its proper divisors (17007800).

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

13056520 is a wasteful number, since it uses less digits than its factorization.

13056520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7645 (or 7641 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 13056520 is about 3613.3806884966. The cubic root of 13056520 is about 235.4737387755.

The spelling of 13056520 in words is "thirteen million, fifty-six thousand, five hundred twenty".