13238880392 has 8 divisors (see below), whose sum is σ = 24822900750. Its totient is φ = 6619440192.

The previous prime is 13238880379. The next prime is 13238880397. The reversal of 13238880392 is 29308883231.

It can be written as a sum of positive squares in only one way, i.e., 7261425796 + 5977454596 = 85214^2 + 77314^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (13238880397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 827430017 + ... + 827430032.

Almost surely, 2^13238880392 is an apocalyptic number.

It is an amenable number.

13238880392 is a deficient number, since it is larger than the sum of its proper divisors (11584020358).

13238880392 is a wasteful number, since it uses less digits than its factorization.

13238880392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654860055 (or 1654860051 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 47.

The spelling of 13238880392 in words is "thirteen billion, two hundred thirty-eight million, eight hundred eighty thousand, three hundred ninety-two".