39928872 has 16 divisors (see below), whose sum is σ = 99822240. Its totient is φ = 13309616.

The previous prime is 39928843. The next prime is 39928873. The reversal of 39928872 is 27882993.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (39928873) 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, 831828 + ... + 831875.

It is an arithmetic number, because the mean of its divisors is an integer number (6238890).

Almost surely, 2^39928872 is an apocalyptic number.

It is an amenable number.

39928872 is an abundant number, since it is smaller than the sum of its proper divisors (59893368).

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

39928872 is a wasteful number, since it uses less digits than its factorization.

39928872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663712 (or 1663708 counting only the distinct ones).

The product of its digits is 435456, while the sum is 48.

The square root of 39928872 is about 6318.9296561997. The cubic root of 39928872 is about 341.7923571138.

The spelling of 39928872 in words is "thirty-nine million, nine hundred twenty-eight thousand, eight hundred seventy-two".