13040044 has 12 divisors (see below), whose sum is σ = 22906800. Its totient is φ = 6495248.

The previous prime is 13040029. The next prime is 13040059. The reversal of 13040044 is 44004031.

It is an interprime number because it is at equal distance from previous prime (13040029) and next prime (13040059).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4984 + ... + 7135.

It is an arithmetic number, because the mean of its divisors is an integer number (1908900).

Almost surely, 2^13040044 is an apocalyptic number.

It is an amenable number.

13040044 is a deficient number, since it is larger than the sum of its proper divisors (9866756).

13040044 is a wasteful number, since it uses less digits than its factorization.

13040044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12392 (or 12390 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 13040044 is about 3611.1001093850. The cubic root of 13040044 is about 235.3746491156.

Adding to 13040044 its reverse (44004031), we get a palindrome (57044075).

The spelling of 13040044 in words is "thirteen million, forty thousand, forty-four".