39923072 has 64 divisors (see below), whose sum is σ = 96279840. Its totient is φ = 16097280.

The previous prime is 39923029. The next prime is 39923119. The reversal of 39923072 is 27032993.

It is a tau number, because it is divible by the number of its divisors (64).

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13922 + ... + 16542.

Almost surely, 2^39923072 is an apocalyptic number.

39923072 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39923072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48139920).

39923072 is an abundant number, since it is smaller than the sum of its proper divisors (56356768).

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

39923072 is a wasteful number, since it uses less digits than its factorization.

39923072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2659 (or 2647 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 39923072 is about 6318.4707010478. The cubic root of 39923072 is about 341.7758069204.

The spelling of 39923072 in words is "thirty-nine million, nine hundred twenty-three thousand, seventy-two".