39728452 has 12 divisors (see below), whose sum is σ = 72547776. Its totient is φ = 19000520.

The previous prime is 39728441. The next prime is 39728459. The reversal of 39728452 is 25482793.

It is not an unprimeable number, because it can be changed into a prime (39728459) 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, 215824 + ... + 216007.

It is an arithmetic number, because the mean of its divisors is an integer number (6045648).

Almost surely, 2^39728452 is an apocalyptic number.

It is an amenable number.

39728452 is a deficient number, since it is larger than the sum of its proper divisors (32819324).

39728452 is a wasteful number, since it uses less digits than its factorization.

39728452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431858 (or 431856 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 39728452 is about 6303.0510072504. The cubic root of 39728452 is about 341.2195305261.

The spelling of 39728452 in words is "thirty-nine million, seven hundred twenty-eight thousand, four hundred fifty-two".