13670520 has 32 divisors (see below), whose sum is σ = 41011920. Its totient is φ = 3645440.

The previous prime is 13670497. The next prime is 13670521. The reversal of 13670520 is 2507631.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13670521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56841 + ... + 57080.

Almost surely, 2^13670520 is an apocalyptic number.

13670520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13670520 is an abundant number, since it is smaller than the sum of its proper divisors (27341400).

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

13670520 is a wasteful number, since it uses less digits than its factorization.

13670520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113935 (or 113931 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 13670520 is about 3697.3666304547. The cubic root of 13670520 is about 239.1084980907.

The spelling of 13670520 in words is "thirteen million, six hundred seventy thousand, five hundred twenty".