13156560 has 80 divisors (see below), whose sum is σ = 45324480. Its totient is φ = 3507840.

The previous prime is 13156553. The next prime is 13156597. The reversal of 13156560 is 6565131.

13156560 = T₂₄ + T₂₅ + ... + T₄₂₈.

It is a happy number.

13156560 is a `hidden beast` number, since 1 + 3 + 1 + 5 + 656 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 886 + ... + 5205.

It is an arithmetic number, because the mean of its divisors is an integer number (566556).

Almost surely, 2^13156560 is an apocalyptic number.

13156560 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 13156560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22662240).

13156560 is an abundant number, since it is smaller than the sum of its proper divisors (32167920).

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

13156560 is a wasteful number, since it uses less digits than its factorization.

13156560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6113 (or 6101 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 13156560 is about 3627.1972651070. The cubic root of 13156560 is about 236.0736148786.

It can be divided in two parts, 1315 and 6560, that added together give a triangular number (7875 = T₁₂₅).

The spelling of 13156560 in words is "thirteen million, one hundred fifty-six thousand, five hundred sixty".