38800920 has 32 divisors (see below), whose sum is σ = 116403120. Its totient is φ = 10346880.

The previous prime is 38800903. The next prime is 38800943. The reversal of 38800920 is 2900883.

It is a super-2 number, since 2×38800920² = 3011022785692800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 161551 + ... + 161790.

Almost surely, 2^38800920 is an apocalyptic number.

38800920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38800920 is an abundant number, since it is smaller than the sum of its proper divisors (77602200).

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

38800920 is a wasteful number, since it uses less digits than its factorization.

38800920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323355 (or 323351 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 38800920 is about 6229.0384490706. The cubic root of 38800920 is about 338.5431320026.

The spelling of 38800920 in words is "thirty-eight million, eight hundred thousand, nine hundred twenty".