13112988 has 72 divisors (see below), whose sum is σ = 36867600. Its totient is φ = 3612672.

The previous prime is 13112971. The next prime is 13113011. The reversal of 13112988 is 88921131.

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, 16668 + ... + 17436.

It is an arithmetic number, because the mean of its divisors is an integer number (512050).

Almost surely, 2^13112988 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 13112988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18433800).

13112988 is an abundant number, since it is smaller than the sum of its proper divisors (23754612).

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

13112988 is a wasteful number, since it uses less digits than its factorization.

13112988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819 (or 810 counting only the distinct ones).

The product of its digits is 3456, while the sum is 33.

The square root of 13112988 is about 3621.1859935662. The cubic root of 13112988 is about 235.8127164930.

The spelling of 13112988 in words is "thirteen million, one hundred twelve thousand, nine hundred eighty-eight".