38878920 has 64 divisors (see below), whose sum is σ = 129600000. Its totient is φ = 10367424.

The previous prime is 38878919. The next prime is 38878927. The reversal of 38878920 is 2987883.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (38878927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16920 + ... + 19079.

It is an arithmetic number, because the mean of its divisors is an integer number (2025000).

Almost surely, 2^38878920 is an apocalyptic number.

38878920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38878920 is an abundant number, since it is smaller than the sum of its proper divisors (90721080).

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

38878920 is a wasteful number, since it uses less digits than its factorization.

38878920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36019 (or 36009 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 38878920 is about 6235.2963041062. The cubic root of 38878920 is about 338.7698335814.

The spelling of 38878920 in words is "thirty-eight million, eight hundred seventy-eight thousand, nine hundred twenty".