390198732 has 96 divisors (see below), whose sum is σ = 1142152704. Its totient is φ = 100723200.

The previous prime is 390198709. The next prime is 390198733. The reversal of 390198732 is 237891093.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (390198733) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158632 + ... + 161072.

It is an arithmetic number, because the mean of its divisors is an integer number (11897424).

Almost surely, 2^390198732 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 390198732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (571076352).

390198732 is an abundant number, since it is smaller than the sum of its proper divisors (751953972).

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

390198732 is a wasteful number, since it uses less digits than its factorization.

390198732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2639 (or 2637 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 390198732 is about 19753.4486103060. The cubic root of 390198732 is about 730.7384358652.

The spelling of 390198732 in words is "three hundred ninety million, one hundred ninety-eight thousand, seven hundred thirty-two".