39728572 has 12 divisors (see below), whose sum is σ = 74873176. Its totient is φ = 18336240.

The previous prime is 39728561. The next prime is 39728587. The reversal of 39728572 is 27582793.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381954 + ... + 382057.

Almost surely, 2^39728572 is an apocalyptic number.

It is an amenable number.

39728572 is a deficient number, since it is larger than the sum of its proper divisors (35144604).

39728572 is a wasteful number, since it uses less digits than its factorization.

39728572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764028 (or 764026 counting only the distinct ones).

The product of its digits is 211680, while the sum is 43.

The square root of 39728572 is about 6303.0605264427. The cubic root of 39728572 is about 341.2198740775.

It can be divided in two parts, 3972 and 8572, that added together give a square (12544 = 112²).

The spelling of 39728572 in words is "thirty-nine million, seven hundred twenty-eight thousand, five hundred seventy-two".