38431972 has 12 divisors (see below), whose sum is σ = 67325440. Its totient is φ = 19196136.

The previous prime is 38431969. The next prime is 38431973. The reversal of 38431972 is 27913483.

It is not an unprimeable number, because it can be changed into a prime (38431973) 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, 72 + ... + 8767.

Almost surely, 2^38431972 is an apocalyptic number.

It is an amenable number.

38431972 is a deficient number, since it is larger than the sum of its proper divisors (28893468).

38431972 is a wasteful number, since it uses less digits than its factorization.

38431972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9930 (or 9928 counting only the distinct ones).

The product of its digits is 36288, while the sum is 37.

The square root of 38431972 is about 6199.3525468391. The cubic root of 38431972 is about 337.4666728866.

The spelling of 38431972 in words is "thirty-eight million, four hundred thirty-one thousand, nine hundred seventy-two".