390468220 has 24 divisors (see below), whose sum is σ = 820676304. Its totient is φ = 156055296.

The previous prime is 390468191. The next prime is 390468229. The reversal of 390468220 is 22864093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390468229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18052 + ... + 33268.

It is an arithmetic number, because the mean of its divisors is an integer number (34194846).

Almost surely, 2^390468220 is an apocalyptic number.

It is an amenable number.

390468220 is an abundant number, since it is smaller than the sum of its proper divisors (430208084).

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

390468220 is a wasteful number, since it uses less digits than its factorization.

390468220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16509 (or 16507 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 390468220 is about 19760.2687228691. The cubic root of 390468220 is about 730.9066235995.

The spelling of 390468220 in words is "three hundred ninety million, four hundred sixty-eight thousand, two hundred twenty".