13656880 has 20 divisors (see below), whose sum is σ = 31752432. Its totient is φ = 5462720.

The previous prime is 13656869. The next prime is 13656887. The reversal of 13656880 is 8865631.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (13656887) 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, 85276 + ... + 85435.

Almost surely, 2^13656880 is an apocalyptic number.

13656880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13656880 is an abundant number, since it is smaller than the sum of its proper divisors (18095552).

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

13656880 is a wasteful number, since it uses less digits than its factorization.

13656880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170724 (or 170718 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 13656880 is about 3695.5216140621. The cubic root of 13656880 is about 239.0289467341.

The spelling of 13656880 in words is "thirteen million, six hundred fifty-six thousand, eight hundred eighty".