38920220 has 12 divisors (see below), whose sum is σ = 81732504. Its totient is φ = 15568080.

The previous prime is 38920213. The next prime is 38920229. The reversal of 38920220 is 2202983.

It is a self number, because there is not a number n which added to its sum of digits gives 38920220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38920229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 972986 + ... + 973025.

It is an arithmetic number, because the mean of its divisors is an integer number (6811042).

Almost surely, 2^38920220 is an apocalyptic number.

It is an amenable number.

38920220 is an abundant number, since it is smaller than the sum of its proper divisors (42812284).

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

38920220 is a wasteful number, since it uses less digits than its factorization.

38920220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946020 (or 1946018 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 38920220 is about 6238.6072163585. The cubic root of 38920220 is about 338.8897464021.

The spelling of 38920220 in words is "thirty-eight million, nine hundred twenty thousand, two hundred twenty".