13556880 has 120 divisors (see below), whose sum is σ = 47973120. Its totient is φ = 3421440.

The previous prime is 13556857. The next prime is 13556909. The reversal of 13556880 is 8865531.

13556880 is a `hidden beast` number, since 13 + 5 + 568 + 80 = 666.

13556880 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 (120).

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13185 + ... + 14175.

It is an arithmetic number, because the mean of its divisors is an integer number (399776).

Almost surely, 2^13556880 is an apocalyptic number.

13556880 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 13556880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23986560).

13556880 is an abundant number, since it is smaller than the sum of its proper divisors (34416240).

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

13556880 is a wasteful number, since it uses less digits than its factorization.

13556880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029 (or 1020 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 13556880 is about 3681.9668656847. The cubic root of 13556880 is about 238.4441017160. Note that the first 3 decimals are identical.

The spelling of 13556880 in words is "thirteen million, five hundred fifty-six thousand, eight hundred eighty".