38693816 has 32 divisors (see below), whose sum is σ = 84486240. Its totient is φ = 16268928.

The previous prime is 38693803. The next prime is 38693821. The reversal of 38693816 is 61839683.

It is a super-2 number, since 2×38693816² = 2994422793283712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3551 + ... + 9486.

It is an arithmetic number, because the mean of its divisors is an integer number (2640195).

Almost surely, 2^38693816 is an apocalyptic number.

It is an amenable number.

38693816 is an abundant number, since it is smaller than the sum of its proper divisors (45792424).

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

38693816 is a wasteful number, since it uses less digits than its factorization.

38693816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13103 (or 13099 counting only the distinct ones).

The product of its digits is 186624, while the sum is 44.

The square root of 38693816 is about 6220.4353545391. The cubic root of 38693816 is about 338.2313461168.

The spelling of 38693816 in words is "thirty-eight million, six hundred ninety-three thousand, eight hundred sixteen".