38431864 has 8 divisors (see below), whose sum is σ = 72059760. Its totient is φ = 19215928.

The previous prime is 38431859. The next prime is 38431867. The reversal of 38431864 is 46813483.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38431867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2401984 + ... + 2401999.

It is an arithmetic number, because the mean of its divisors is an integer number (9007470).

Almost surely, 2^38431864 is an apocalyptic number.

It is an amenable number.

38431864 is a deficient number, since it is larger than the sum of its proper divisors (33627896).

38431864 is a wasteful number, since it uses less digits than its factorization.

38431864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4803989 (or 4803985 counting only the distinct ones).

The product of its digits is 55296, while the sum is 37.

The square root of 38431864 is about 6199.3438362459. The cubic root of 38431864 is about 337.4663567745.

The spelling of 38431864 in words is "thirty-eight million, four hundred thirty-one thousand, eight hundred sixty-four".