13290344 has 8 divisors (see below), whose sum is σ = 24919410. Its totient is φ = 6645168.

The previous prime is 13290317. The next prime is 13290349. The reversal of 13290344 is 44309231.

13290344 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11222500 + 2067844 = 3350^2 + 1438^2 .

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 (13290349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 830639 + ... + 830654.

Almost surely, 2^13290344 is an apocalyptic number.

It is an amenable number.

13290344 is a deficient number, since it is larger than the sum of its proper divisors (11629066).

13290344 is a wasteful number, since it uses less digits than its factorization.

13290344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661299 (or 1661295 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 13290344 is about 3645.5924072776. The cubic root of 13290344 is about 236.8710984615.

Adding to 13290344 its reverse (44309231), we get a palindrome (57599575).

The spelling of 13290344 in words is "thirteen million, two hundred ninety thousand, three hundred forty-four".