320499872 has 48 divisors (see below), whose sum is σ = 786687552. Its totient is φ = 124869120.

The previous prime is 320499869. The next prime is 320499899. The reversal of 320499872 is 278994023.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62573 + ... + 67500.

It is an arithmetic number, because the mean of its divisors is an integer number (16389324).

Almost surely, 2^320499872 is an apocalyptic number.

320499872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

320499872 is an abundant number, since it is smaller than the sum of its proper divisors (466187680).

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

320499872 is a wasteful number, since it uses less digits than its factorization.

320499872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130101 (or 130093 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 320499872 is about 17902.5102150508. The cubic root of 320499872 is about 684.3463471723.

The spelling of 320499872 in words is "three hundred twenty million, four hundred ninety-nine thousand, eight hundred seventy-two".