39972152 has 16 divisors (see below), whose sum is σ = 81761400. Its totient is φ = 18169120.

The previous prime is 39972109. The next prime is 39972157. The reversal of 39972152 is 25127993.

39972152 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×39972152² = 3195545871022208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39972157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227027 + ... + 227202.

Almost surely, 2^39972152 is an apocalyptic number.

It is an amenable number.

39972152 is an abundant number, since it is smaller than the sum of its proper divisors (41789248).

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

39972152 is a wasteful number, since it uses less digits than its factorization.

39972152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454246 (or 454242 counting only the distinct ones).

The product of its digits is 34020, while the sum is 38.

The square root of 39972152 is about 6322.3533593117. The cubic root of 39972152 is about 341.9158052265.

The spelling of 39972152 in words is "thirty-nine million, nine hundred seventy-two thousand, one hundred fifty-two".