39928672 has 48 divisors (see below), whose sum is σ = 90266400. Its totient is φ = 17031168.

The previous prime is 39928649. The next prime is 39928739. The reversal of 39928672 is 27682993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88704 + ... + 89152.

It is an arithmetic number, because the mean of its divisors is an integer number (1880550).

Almost surely, 2^39928672 is an apocalyptic number.

39928672 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39928672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45133200).

39928672 is an abundant number, since it is smaller than the sum of its proper divisors (50337728).

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

39928672 is a wasteful number, since it uses less digits than its factorization.

39928672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863 (or 855 counting only the distinct ones).

The product of its digits is 326592, while the sum is 46.

The square root of 39928672 is about 6318.9138307149. The cubic root of 39928672 is about 341.7917864442.

The spelling of 39928672 in words is "thirty-nine million, nine hundred twenty-eight thousand, six hundred seventy-two".