390217568 has 24 divisors (see below), whose sum is σ = 827337168. Its totient is φ = 180100224.

The previous prime is 390217543. The next prime is 390217579. The reversal of 390217568 is 865712093.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468596 + ... + 469427.

It is an arithmetic number, because the mean of its divisors is an integer number (34472382).

Almost surely, 2^390217568 is an apocalyptic number.

It is an amenable number.

390217568 is an abundant number, since it is smaller than the sum of its proper divisors (437119600).

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

390217568 is a wasteful number, since it uses less digits than its factorization.

390217568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938046 (or 938038 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 390217568 is about 19753.9253820601. The cubic root of 390217568 is about 730.7501939486.

The spelling of 390217568 in words is "three hundred ninety million, two hundred seventeen thousand, five hundred sixty-eight".