13191928 has 32 divisors (see below), whose sum is σ = 26496000. Its totient is φ = 6138720.

The previous prime is 13191917. The next prime is 13191929. The reversal of 13191928 is 82919131.

13191928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 13191893 and 13191902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13191929) 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, 8233 + ... + 9703.

It is an arithmetic number, because the mean of its divisors is an integer number (828000).

Almost surely, 2^13191928 is an apocalyptic number.

It is an amenable number.

13191928 is an abundant number, since it is smaller than the sum of its proper divisors (13304072).

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

13191928 is a wasteful number, since it uses less digits than its factorization.

13191928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555 (or 1551 counting only the distinct ones).

The product of its digits is 3888, while the sum is 34.

The square root of 13191928 is about 3632.0693825972. The cubic root of 13191928 is about 236.2849665031.

The spelling of 13191928 in words is "thirteen million, one hundred ninety-one thousand, nine hundred twenty-eight".