39728630 has 32 divisors (see below), whose sum is σ = 73685376. Its totient is φ = 15414784.

The previous prime is 39728617. The next prime is 39728669. The reversal of 39728630 is 3682793.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64082 + ... + 64698.

It is an arithmetic number, because the mean of its divisors is an integer number (2302668).

Almost surely, 2^39728630 is an apocalyptic number.

39728630 is a deficient number, since it is larger than the sum of its proper divisors (33956746).

39728630 is a wasteful number, since it uses less digits than its factorization.

39728630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 39728630 is about 6303.0651273805. The cubic root of 39728630 is about 341.2200401272.

The spelling of 39728630 in words is "thirty-nine million, seven hundred twenty-eight thousand, six hundred thirty".