13011928 has 16 divisors (see below), whose sum is σ = 25458480. Its totient is φ = 6223008.

The previous prime is 13011917. The next prime is 13011937. The reversal of 13011928 is 82911031.

13011928 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35175 + ... + 35542.

It is an arithmetic number, because the mean of its divisors is an integer number (1591155).

Almost surely, 2^13011928 is an apocalyptic number.

It is an amenable number.

13011928 is a deficient number, since it is larger than the sum of its proper divisors (12446552).

13011928 is a wasteful number, since it uses less digits than its factorization.

13011928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70746 (or 70742 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 13011928 is about 3607.2050121943. The cubic root of 13011928 is about 235.2053614555.

Adding to 13011928 its reverse (82911031), we get a palindrome (95922959).

The spelling of 13011928 in words is "thirteen million, eleven thousand, nine hundred twenty-eight".