13799520 has 216 divisors, whose sum is σ = 55311984. Its totient is φ = 3068928.

The previous prime is 13799519. The next prime is 13799531. The reversal of 13799520 is 2599731.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 372942 + ... + 372978.

It is an arithmetic number, because the mean of its divisors is an integer number (256074).

Almost surely, 2^13799520 is an apocalyptic number.

13799520 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 13799520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27655992).

13799520 is an abundant number, since it is smaller than the sum of its proper divisors (41512464).

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

13799520 is a wasteful number, since it uses less digits than its factorization.

13799520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 13799520 is about 3714.7705178113. The cubic root of 13799520 is about 239.8582496283.

The spelling of 13799520 in words is "thirteen million, seven hundred ninety-nine thousand, five hundred twenty".