13380156 has 36 divisors (see below), whose sum is σ = 35813232. Its totient is φ = 4197504.

The previous prime is 13380149. The next prime is 13380179. The reversal of 13380156 is 65108331.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10320 + ... + 11543.

It is an arithmetic number, because the mean of its divisors is an integer number (994812).

Almost surely, 2^13380156 is an apocalyptic number.

It is an amenable number.

13380156 is an abundant number, since it is smaller than the sum of its proper divisors (22433076).

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

13380156 is a wasteful number, since it uses less digits than its factorization.

13380156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21890 (or 21885 counting only the distinct ones).

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

The square root of 13380156 is about 3657.8895554677. The cubic root of 13380156 is about 237.4034680644.

Adding to 13380156 its reverse (65108331), we get a palindrome (78488487).

The spelling of 13380156 in words is "thirteen million, three hundred eighty thousand, one hundred fifty-six".