39313728 has 56 divisors (see below), whose sum is σ = 115580160. Its totient is φ = 13104000.

The previous prime is 39313723. The next prime is 39313759. The reversal of 39313728 is 82731393.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 39313692 and 39313701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39313723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9648 + ... + 13103.

Almost surely, 2^39313728 is an apocalyptic number.

It is an amenable number.

39313728 is an abundant number, since it is smaller than the sum of its proper divisors (76266432).

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

39313728 is a wasteful number, since it uses less digits than its factorization.

39313728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22772 (or 22756 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 39313728 is about 6270.0660283605. The cubic root of 39313728 is about 340.0280484358.

The spelling of 39313728 in words is "thirty-nine million, three hundred thirteen thousand, seven hundred twenty-eight".