13520680 has 16 divisors (see below), whose sum is σ = 30421620. Its totient is φ = 5408256.

The previous prime is 13520677. The next prime is 13520719. The reversal of 13520680 is 8602531.

It is a happy number.

13520680 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 13060996 + 459684 = 3614^2 + 678^2 .

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, 168969 + ... + 169048.

Almost surely, 2^13520680 is an apocalyptic number.

13520680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13520680 is an abundant number, since it is smaller than the sum of its proper divisors (16900940).

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

13520680 is a wasteful number, since it uses less digits than its factorization.

13520680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338028 (or 338024 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 13520680 is about 3677.0477288172. The cubic root of 13520680 is about 238.2316789276.

The spelling of 13520680 in words is "thirteen million, five hundred twenty thousand, six hundred eighty".