390837220 has 48 divisors (see below), whose sum is σ = 865670400. Its totient is φ = 147813120.

The previous prime is 390837203. The next prime is 390837221. The reversal of 390837220 is 22738093.

It is not an unprimeable number, because it can be changed into a prime (390837221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345616 + ... + 346744.

It is an arithmetic number, because the mean of its divisors is an integer number (18034800).

Almost surely, 2^390837220 is an apocalyptic number.

It is an amenable number.

390837220 is an abundant number, since it is smaller than the sum of its proper divisors (474833180).

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

390837220 is a wasteful number, since it uses less digits than its factorization.

390837220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2068 (or 2066 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 390837220 is about 19769.6034355776. The cubic root of 390837220 is about 731.1367913965.

The spelling of 390837220 in words is "three hundred ninety million, eight hundred thirty-seven thousand, two hundred twenty".