38813864 has 16 divisors (see below), whose sum is σ = 74469120. Its totient is φ = 18955440.

The previous prime is 38813843. The next prime is 38813893. The reversal of 38813864 is 46831883.

It is a happy number.

It is a super-2 number, since 2×38813864² = 3013032077220992, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56072 + ... + 56759.

It is an arithmetic number, because the mean of its divisors is an integer number (4654320).

Almost surely, 2^38813864 is an apocalyptic number.

It is an amenable number.

38813864 is a deficient number, since it is larger than the sum of its proper divisors (35655256).

38813864 is a wasteful number, since it uses less digits than its factorization.

38813864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112880 (or 112876 counting only the distinct ones).

The product of its digits is 110592, while the sum is 41.

The square root of 38813864 is about 6230.0773670959. The cubic root of 38813864 is about 338.5807738515.

The spelling of 38813864 in words is "thirty-eight million, eight hundred thirteen thousand, eight hundred sixty-four".