13138468 has 18 divisors (see below), whose sum is σ = 26746566. Its totient is φ = 5630688.

The previous prime is 13138457. The next prime is 13138471. The reversal of 13138468 is 86483131.

It can be written as a sum of positive squares in only one way, i.e., 7606564 + 5531904 = 2758^2 + 2352^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33321 + ... + 33712.

Almost surely, 2^13138468 is an apocalyptic number.

It is an amenable number.

13138468 is an abundant number, since it is smaller than the sum of its proper divisors (13608098).

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

13138468 is a wasteful number, since it uses less digits than its factorization.

13138468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67051 (or 67042 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 13138468 is about 3624.7024705484. The cubic root of 13138468 is about 235.9653544852.

The spelling of 13138468 in words is "thirteen million, one hundred thirty-eight thousand, four hundred sixty-eight".