13520670 has 32 divisors (see below), whose sum is σ = 33570720. Its totient is φ = 3480960.

The previous prime is 13520659. The next prime is 13520677. The reversal of 13520670 is 7602531.

It is a self number, because there is not a number n which added to its sum of digits gives 13520670.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13520677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6901 + ... + 8640.

It is an arithmetic number, because the mean of its divisors is an integer number (1049085).

Almost surely, 2^13520670 is an apocalyptic number.

13520670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13520670 is an abundant number, since it is smaller than the sum of its proper divisors (20050050).

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

13520670 is a wasteful number, since it uses less digits than its factorization.

13520670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15580.

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

The square root of 13520670 is about 3677.0463690304. The cubic root of 13520670 is about 238.2316201949.

The spelling of 13520670 in words is "thirteen million, five hundred twenty thousand, six hundred seventy".