39728922 has 8 divisors (see below), whose sum is σ = 79457856. Its totient is φ = 13242972.

The previous prime is 39728917. The next prime is 39728929. The reversal of 39728922 is 22982793.

It is a sphenic number, since it is the product of 3 distinct primes.

39728922 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (39728929) 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, 3310738 + ... + 3310749.

It is an arithmetic number, because the mean of its divisors is an integer number (9932232).

Almost surely, 2^39728922 is an apocalyptic number.

39728922 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

39728922 is a wasteful number, since it uses less digits than its factorization.

39728922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6621492.

The product of its digits is 108864, while the sum is 42.

The square root of 39728922 is about 6303.0882906715. The cubic root of 39728922 is about 341.2208760987.

The spelling of 39728922 in words is "thirty-nine million, seven hundred twenty-eight thousand, nine hundred twenty-two".