390426732 has 18 divisors (see below), whose sum is σ = 986912108. Its totient is φ = 130142232.

The previous prime is 390426727. The next prime is 390426733. The reversal of 390426732 is 237624093.

It is a happy number.

390426732 is a `hidden beast` number, since 390 + 4 + 267 + 3 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 10845187 = 390426732 / (3 + 9 + 0 + 4 + 2 + 6 + 7 + 3 + 2).

It is not an unprimeable number, because it can be changed into a prime (390426733) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5422558 + ... + 5422629.

Almost surely, 2^390426732 is an apocalyptic number.

It is an amenable number.

390426732 is an abundant number, since it is smaller than the sum of its proper divisors (596485376).

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

390426732 is a wasteful number, since it uses less digits than its factorization.

390426732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10845197 (or 10845192 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 390426732 is about 19759.2189116878. The cubic root of 390426732 is about 730.8807359373.

The spelling of 390426732 in words is "three hundred ninety million, four hundred twenty-six thousand, seven hundred thirty-two".