38807220 has 48 divisors (see below), whose sum is σ = 112412160. Its totient is φ = 9991296.

The previous prime is 38807213. The next prime is 38807221. The reversal of 38807220 is 2270883.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38807221) 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, 9412 + ... + 12891.

It is an arithmetic number, because the mean of its divisors is an integer number (2341920).

Almost surely, 2^38807220 is an apocalyptic number.

38807220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38807220 is an abundant number, since it is smaller than the sum of its proper divisors (73604940).

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

38807220 is a wasteful number, since it uses less digits than its factorization.

38807220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22344 (or 22342 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 38807220 is about 6229.5441245728. The cubic root of 38807220 is about 338.5614537873.

The spelling of 38807220 in words is "thirty-eight million, eight hundred seven thousand, two hundred twenty".