13520835 has 12 divisors (see below), whose sum is σ = 23436192. Its totient is φ = 7211088.

The previous prime is 13520827. The next prime is 13520839. The reversal of 13520835 is 53802531.

It is not a de Polignac number, because 13520835 - 2³ = 13520827 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 13520799 and 13520808.

It is not an unprimeable number, because it can be changed into a prime (13520839) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150187 + ... + 150276.

It is an arithmetic number, because the mean of its divisors is an integer number (1953016).

Almost surely, 2^13520835 is an apocalyptic number.

13520835 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13520835 is a deficient number, since it is larger than the sum of its proper divisors (9915357).

13520835 is a wasteful number, since it uses less digits than its factorization.

13520835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300474 (or 300471 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 13520835 is about 3677.0688054482. The cubic root of 13520835 is about 238.2325892805.

The spelling of 13520835 in words is "thirteen million, five hundred twenty thousand, eight hundred thirty-five".