320504632 has 32 divisors (see below), whose sum is σ = 716659200. Its totient is φ = 131386464.

The previous prime is 320504627. The next prime is 320504633. The reversal of 320504632 is 236405023.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 320504597 and 320504606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320504633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123132 + ... + 125707.

It is an arithmetic number, because the mean of its divisors is an integer number (22395600).

Almost surely, 2^320504632 is an apocalyptic number.

It is an amenable number.

320504632 is an abundant number, since it is smaller than the sum of its proper divisors (396154568).

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

320504632 is a wasteful number, since it uses less digits than its factorization.

320504632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248875 (or 248871 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 320504632 is about 17902.6431568079. The cubic root of 320504632 is about 684.3497350806.

Adding to 320504632 its reverse (236405023), we get a palindrome (556909655).

The spelling of 320504632 in words is "three hundred twenty million, five hundred four thousand, six hundred thirty-two".