13299156 has 72 divisors (see below), whose sum is σ = 36635144. Its totient is φ = 4043520.

The previous prime is 13299149. The next prime is 13299179. The reversal of 13299156 is 65199231.

It can be written as a sum of positive squares in 4 ways, for example, as 810000 + 12489156 = 900^2 + 3534^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 13299156.

It is a congruent number.

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, 73386 + ... + 73566.

Almost surely, 2^13299156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13299156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18317572).

13299156 is an abundant number, since it is smaller than the sum of its proper divisors (23335988).

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

13299156 is a wasteful number, since it uses less digits than its factorization.

13299156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 356 counting only the distinct ones).

The product of its digits is 14580, while the sum is 36.

The square root of 13299156 is about 3646.8007897334. The cubic root of 13299156 is about 236.9234383901.

The spelling of 13299156 in words is "thirteen million, two hundred ninety-nine thousand, one hundred fifty-six".