13968520 has 32 divisors (see below), whose sum is σ = 31671000. Its totient is φ = 5544448.

The previous prime is 13968503. The next prime is 13968523. The reversal of 13968520 is 2586931.

It can be written as a sum of positive squares in 4 ways, for example, as 13586596 + 381924 = 3686^2 + 618^2 .

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (13968523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4206 + ... + 6754.

Almost surely, 2^13968520 is an apocalyptic number.

13968520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13968520 is an abundant number, since it is smaller than the sum of its proper divisors (17702480).

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

13968520 is a wasteful number, since it uses less digits than its factorization.

13968520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2697 (or 2693 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 13968520 is about 3737.4483274020. The cubic root of 13968520 is about 240.8334449486.

The spelling of 13968520 in words is "thirteen million, nine hundred sixty-eight thousand, five hundred twenty".