13520830 has 32 divisors (see below), whose sum is σ = 25147584. Its totient is φ = 5231616.

The previous prime is 13520827. The next prime is 13520839. The reversal of 13520830 is 3802531.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 51279 + ... + 51541.

It is an arithmetic number, because the mean of its divisors is an integer number (785862).

Almost surely, 2^13520830 is an apocalyptic number.

13520830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13520830 is a deficient number, since it is larger than the sum of its proper divisors (11626754).

13520830 is a wasteful number, since it uses less digits than its factorization.

13520830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 13520830 is about 3677.0681255587. The cubic root of 13520830 is about 238.2325599143.

The spelling of 13520830 in words is "thirteen million, five hundred twenty thousand, eight hundred thirty".