13307928 has 48 divisors (see below), whose sum is σ = 34437240. Its totient is φ = 4285440.

The previous prime is 13307927. The next prime is 13307933. The reversal of 13307928 is 82970331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13307927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22776 + ... + 23352.

Almost surely, 2^13307928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13307928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17218620).

13307928 is an abundant number, since it is smaller than the sum of its proper divisors (21129312).

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

13307928 is a wasteful number, since it uses less digits than its factorization.

13307928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648 (or 613 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 13307928 is about 3648.0032894722. The cubic root of 13307928 is about 236.9755177759.

The spelling of 13307928 in words is "thirteen million, three hundred seven thousand, nine hundred twenty-eight".