13099520 has 160 divisors (see below), whose sum is σ = 38890368. Its totient is φ = 4128768.

The previous prime is 13099519. The next prime is 13099523. The reversal of 13099520 is 2599031.

13099520 = 271² + 272² + ... + 389².

It is a tau number, because it is divible by the number of its divisors (160).

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (13099523) 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, 304619 + ... + 304661.

Almost surely, 2^13099520 is an apocalyptic number.

13099520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13099520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19445184).

13099520 is an abundant number, since it is smaller than the sum of its proper divisors (25790848).

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

13099520 is an equidigital number, since it uses as much as digits as its factorization.

13099520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 13099520 is about 3619.3259040877. The cubic root of 13099520 is about 235.7319565221.

The spelling of 13099520 in words is "thirteen million, ninety-nine thousand, five hundred twenty".