13992520 has 16 divisors (see below), whose sum is σ = 31483260. Its totient is φ = 5596992.

The previous prime is 13992509. The next prime is 13992523. The reversal of 13992520 is 2529931.

It can be written as a sum of positive squares in 2 ways, for example, as 11819844 + 2172676 = 3438^2 + 1474^2 .

It is not an unprimeable number, because it can be changed into a prime (13992523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174867 + ... + 174946.

Almost surely, 2^13992520 is an apocalyptic number.

13992520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13992520 is an abundant number, since it is smaller than the sum of its proper divisors (17490740).

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

13992520 is a wasteful number, since it uses less digits than its factorization.

13992520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349824 (or 349820 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 13992520 is about 3740.6576961812. The cubic root of 13992520 is about 240.9712952847.

The spelling of 13992520 in words is "thirteen million, nine hundred ninety-two thousand, five hundred twenty".