13199928 has 32 divisors (see below), whose sum is σ = 37714560. Its totient is φ = 3771360.

The previous prime is 13199917. The next prime is 13199929. The reversal of 13199928 is 82999131.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 13199928.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13199929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39118 + ... + 39453.

It is an arithmetic number, because the mean of its divisors is an integer number (1178580).

Almost surely, 2^13199928 is an apocalyptic number.

It is an amenable number.

13199928 is an abundant number, since it is smaller than the sum of its proper divisors (24514632).

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

13199928 is a wasteful number, since it uses less digits than its factorization.

13199928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78587 (or 78583 counting only the distinct ones).

The product of its digits is 34992, while the sum is 42.

The square root of 13199928 is about 3633.1705162296. The cubic root of 13199928 is about 236.3327203961.

The spelling of 13199928 in words is "thirteen million, one hundred ninety-nine thousand, nine hundred twenty-eight".