390048220 has 12 divisors (see below), whose sum is σ = 819101304. Its totient is φ = 156019280.

The previous prime is 390048193. The next prime is 390048247. The reversal of 390048220 is 22840093.

It is an interprime number because it is at equal distance from previous prime (390048193) and next prime (390048247).

It is a super-2 number, since 2×390048220² = 304275227850336800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9751186 + ... + 9751225.

It is an arithmetic number, because the mean of its divisors is an integer number (68258442).

Almost surely, 2^390048220 is an apocalyptic number.

It is an amenable number.

390048220 is an abundant number, since it is smaller than the sum of its proper divisors (429053084).

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

390048220 is a wasteful number, since it uses less digits than its factorization.

390048220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19502420 (or 19502418 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 390048220 is about 19749.6384777038. The cubic root of 390048220 is about 730.6444674682.

The spelling of 390048220 in words is "three hundred ninety million, forty-eight thousand, two hundred twenty".