320279928 has 16 divisors (see below), whose sum is σ = 800699880. Its totient is φ = 106759968.

The previous prime is 320279923. The next prime is 320279963. The reversal of 320279928 is 829972023.

It is a self number, because there is not a number n which added to its sum of digits gives 320279928.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320279923) 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, 6672475 + ... + 6672522.

Almost surely, 2^320279928 is an apocalyptic number.

It is an amenable number.

320279928 is an abundant number, since it is smaller than the sum of its proper divisors (480419952).

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

320279928 is a wasteful number, since it uses less digits than its factorization.

320279928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13345006 (or 13345002 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 320279928 is about 17896.3663350972. The cubic root of 320279928 is about 684.1897664367.

The spelling of 320279928 in words is "three hundred twenty million, two hundred seventy-nine thousand, nine hundred twenty-eight".