13213788 has 24 divisors (see below), whose sum is σ = 35236992. Its totient is φ = 3775344.

The previous prime is 13213769. The next prime is 13213829. The reversal of 13213788 is 88731231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78570 + ... + 78737.

It is an arithmetic number, because the mean of its divisors is an integer number (1468208).

Almost surely, 2^13213788 is an apocalyptic number.

It is an amenable number.

13213788 is an abundant number, since it is smaller than the sum of its proper divisors (22023204).

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

13213788 is a wasteful number, since it uses less digits than its factorization.

13213788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157321 (or 157319 counting only the distinct ones).

The product of its digits is 8064, while the sum is 33.

The square root of 13213788 is about 3635.0774407157. The cubic root of 13213788 is about 236.4154083652.

The spelling of 13213788 in words is "thirteen million, two hundred thirteen thousand, seven hundred eighty-eight".