390870832 has 80 divisors (see below), whose sum is σ = 867944448. Its totient is φ = 168791040.

The previous prime is 390870797. The next prime is 390870841. The reversal of 390870832 is 238078093.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 902488 + ... + 902920.

Almost surely, 2^390870832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 390870832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (433972224).

390870832 is an abundant number, since it is smaller than the sum of its proper divisors (477073616).

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

390870832 is a wasteful number, since it uses less digits than its factorization.

390870832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698 (or 692 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 390870832 is about 19770.4535102258. The cubic root of 390870832 is about 731.1577500498.

The spelling of 390870832 in words is "three hundred ninety million, eight hundred seventy thousand, eight hundred thirty-two".