39728992 has 24 divisors (see below), whose sum is σ = 78915816. Its totient is φ = 19686912.

The previous prime is 39728989. The next prime is 39729013. The reversal of 39728992 is 29982793.

39728992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1878 + ... + 9109.

It is an arithmetic number, because the mean of its divisors is an integer number (3288159).

Almost surely, 2^39728992 is an apocalyptic number.

39728992 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

39728992 is a deficient number, since it is larger than the sum of its proper divisors (39186824).

39728992 is a wasteful number, since it uses less digits than its factorization.

39728992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11110 (or 11102 counting only the distinct ones).

The product of its digits is 489888, while the sum is 49.

The square root of 39728992 is about 6303.0938435026. The cubic root of 39728992 is about 341.2210765022.

The spelling of 39728992 in words is "thirty-nine million, seven hundred twenty-eight thousand, nine hundred ninety-two".