390572238 has 24 divisors (see below), whose sum is σ = 908678952. Its totient is φ = 111591984.

The previous prime is 390572219. The next prime is 390572249. The reversal of 390572238 is 832275093.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 390572196 and 390572205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 663945 + ... + 664532.

It is an arithmetic number, because the mean of its divisors is an integer number (37861623).

Almost surely, 2^390572238 is an apocalyptic number.

390572238 is an abundant number, since it is smaller than the sum of its proper divisors (518106714).

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

390572238 is a wasteful number, since it uses less digits than its factorization.

390572238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328496 (or 1328489 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 390572238 is about 19762.9005462255. The cubic root of 390572238 is about 730.9715206395.

The spelling of 390572238 in words is "three hundred ninety million, five hundred seventy-two thousand, two hundred thirty-eight".