39672972 has 18 divisors (see below), whose sum is σ = 100284548. Its totient is φ = 13224312.

The previous prime is 39672967. The next prime is 39672979. The reversal of 39672972 is 27927693.

It is a happy number.

39672972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (39672979) 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 5 ways as a sum of consecutive naturals, for example, 550978 + ... + 551049.

Almost surely, 2^39672972 is an apocalyptic number.

It is an amenable number.

39672972 is an abundant number, since it is smaller than the sum of its proper divisors (60611576).

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

39672972 is a wasteful number, since it uses less digits than its factorization.

39672972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102037 (or 1102032 counting only the distinct ones).

The product of its digits is 285768, while the sum is 45.

The square root of 39672972 is about 6298.6484264483. The cubic root of 39672972 is about 341.0606210827.

The spelling of 39672972 in words is "thirty-nine million, six hundred seventy-two thousand, nine hundred seventy-two".