320542680 has 64 divisors (see below), whose sum is σ = 973244160. Its totient is φ = 84445568.

The previous prime is 320542631. The next prime is 320542723. The reversal of 320542680 is 86245023.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent 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, 6132 + ... + 26051.

It is an arithmetic number, because the mean of its divisors is an integer number (15206940).

Almost surely, 2^320542680 is an apocalyptic number.

320542680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320542680 is an abundant number, since it is smaller than the sum of its proper divisors (652701480).

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

320542680 is a wasteful number, since it uses less digits than its factorization.

320542680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32280 (or 32276 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 320542680 is about 17903.7057616573. The cubic root of 320542680 is about 684.3768143652.

The spelling of 320542680 in words is "three hundred twenty million, five hundred forty-two thousand, six hundred eighty".