13520493 has 16 divisors (see below), whose sum is σ = 22892160. Its totient is φ = 7725888.

The previous prime is 13520483. The next prime is 13520497. The reversal of 13520493 is 39402531.

It is not a de Polignac number, because 13520493 - 2⁴ = 13520477 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13520497) 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, 35580 + ... + 35957.

It is an arithmetic number, because the mean of its divisors is an integer number (1430760).

Almost surely, 2^13520493 is an apocalyptic number.

It is an amenable number.

13520493 is a deficient number, since it is larger than the sum of its proper divisors (9371667).

13520493 is an equidigital number, since it uses as much as digits as its factorization.

13520493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71553 (or 71547 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 13520493 is about 3677.0223007211. The cubic root of 13520493 is about 238.2305806217.

The spelling of 13520493 in words is "thirteen million, five hundred twenty thousand, four hundred ninety-three".