13138044 has 48 divisors (see below), whose sum is σ = 33398400. Its totient is φ = 4003776.

The previous prime is 13138043. The next prime is 13138067. The reversal of 13138044 is 44083131.

13138044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13138043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5619 + ... + 7605.

It is an arithmetic number, because the mean of its divisors is an integer number (695800).

Almost surely, 2^13138044 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 13138044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16699200).

13138044 is an abundant number, since it is smaller than the sum of its proper divisors (20260356).

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

13138044 is a wasteful number, since it uses less digits than its factorization.

13138044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042 (or 2040 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 13138044 is about 3624.6439825175. The cubic root of 13138044 is about 235.9628161277.

The spelling of 13138044 in words is "thirteen million, one hundred thirty-eight thousand, forty-four".