13120244 has 6 divisors (see below), whose sum is σ = 22960434. Its totient is φ = 6560120.

The previous prime is 13120231. The next prime is 13120253. The reversal of 13120244 is 44202131.

It can be written as a sum of positive squares in only one way, i.e., 12460900 + 659344 = 3530^2 + 812^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1640027 + ... + 1640034.

It is an arithmetic number, because the mean of its divisors is an integer number (3826739).

Almost surely, 2^13120244 is an apocalyptic number.

It is an amenable number.

13120244 is a deficient number, since it is larger than the sum of its proper divisors (9840190).

13120244 is a wasteful number, since it uses less digits than its factorization.

13120244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3280065 (or 3280063 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 13120244 is about 3622.1877367138. The cubic root of 13120244 is about 235.8562036974.

Adding to 13120244 its reverse (44202131), we get a palindrome (57322375).

The spelling of 13120244 in words is "thirteen million, one hundred twenty thousand, two hundred forty-four".