13156380 has 36 divisors (see below), whose sum is σ = 39908232. Its totient is φ = 3508320.

The previous prime is 13156357. The next prime is 13156397. The reversal of 13156380 is 8365131.

13156380 is a `hidden beast` number, since 13 + 15 + 638 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36366 + ... + 36725.

It is an arithmetic number, because the mean of its divisors is an integer number (1108562).

Almost surely, 2^13156380 is an apocalyptic number.

13156380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13156380 is an abundant number, since it is smaller than the sum of its proper divisors (26751852).

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

13156380 is a wasteful number, since it uses less digits than its factorization.

13156380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73106 (or 73101 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 13156380 is about 3627.1724524759. The cubic root of 13156380 is about 236.0725382688.

The spelling of 13156380 in words is "thirteen million, one hundred fifty-six thousand, three hundred eighty".