13655920 has 40 divisors (see below), whose sum is σ = 31939920. Its totient is φ = 5429760.

The previous prime is 13655881. The next prime is 13655933. The reversal of 13655920 is 2955631.

13655920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16476 + ... + 17284.

It is an arithmetic number, because the mean of its divisors is an integer number (798498).

Almost surely, 2^13655920 is an apocalyptic number.

13655920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13655920 is an abundant number, since it is smaller than the sum of its proper divisors (18284000).

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

13655920 is a wasteful number, since it uses less digits than its factorization.

13655920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033 (or 1027 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 13655920 is about 3695.3917248378. The cubic root of 13655920 is about 239.0233458168.

The spelling of 13655920 in words is "thirteen million, six hundred fifty-five thousand, nine hundred twenty".