13591928 has 16 divisors (see below), whose sum is σ = 29125680. Its totient is φ = 5825088.

The previous prime is 13591927. The next prime is 13591937. The reversal of 13591928 is 82919531.

It is a junction number, because it is equal to n+sod(n) for n = 13591891 and 13591900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13591927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121301 + ... + 121412.

It is an arithmetic number, because the mean of its divisors is an integer number (1820355).

Almost surely, 2^13591928 is an apocalyptic number.

It is an amenable number.

13591928 is an abundant number, since it is smaller than the sum of its proper divisors (15533752).

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

13591928 is a wasteful number, since it uses less digits than its factorization.

13591928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242726 (or 242722 counting only the distinct ones).

The product of its digits is 19440, while the sum is 38.

The square root of 13591928 is about 3686.7232063175. The cubic root of 13591928 is about 238.6494045476.

The spelling of 13591928 in words is "thirteen million, five hundred ninety-one thousand, nine hundred twenty-eight".