13928928 has 48 divisors (see below), whose sum is σ = 39379536. Its totient is φ = 4285440.

The previous prime is 13928921. The next prime is 13928953. The reversal of 13928928 is 82982931.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 13928928.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13928921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4333 + ... + 6828.

It is an arithmetic number, because the mean of its divisors is an integer number (820407).

Almost surely, 2^13928928 is an apocalyptic number.

It is an amenable number.

13928928 is an abundant number, since it is smaller than the sum of its proper divisors (25450608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13928928 is a wasteful number, since it uses less digits than its factorization.

13928928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11187 (or 11179 counting only the distinct ones).

The product of its digits is 62208, while the sum is 42.

The square root of 13928928 is about 3732.1479070369. The cubic root of 13928928 is about 240.6056923396.

The spelling of 13928928 in words is "thirteen million, nine hundred twenty-eight thousand, nine hundred twenty-eight".