13128344 has 8 divisors (see below), whose sum is σ = 24615660. Its totient is φ = 6564168.

The previous prime is 13128343. The next prime is 13128347. The reversal of 13128344 is 44382131.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13128343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820514 + ... + 820529.

Almost surely, 2^13128344 is an apocalyptic number.

It is an amenable number.

13128344 is a deficient number, since it is larger than the sum of its proper divisors (11487316).

13128344 is a wasteful number, since it uses less digits than its factorization.

13128344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641049 (or 1641045 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 13128344 is about 3623.3056730008. The cubic root of 13128344 is about 235.9047302908.

The spelling of 13128344 in words is "thirteen million, one hundred twenty-eight thousand, three hundred forty-four".