320800980 has 72 divisors (see below), whose sum is σ = 908657568. Its totient is φ = 84565952.

The previous prime is 320800969. The next prime is 320801029. The reversal of 320800980 is 89008023.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 686707 + ... + 687173.

It is an arithmetic number, because the mean of its divisors is an integer number (12620244).

Almost surely, 2^320800980 is an apocalyptic number.

320800980 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320800980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (454328784).

320800980 is an abundant number, since it is smaller than the sum of its proper divisors (587856588).

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

320800980 is a wasteful number, since it uses less digits than its factorization.

320800980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693 (or 584 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 320800980 is about 17910.9178994266. The cubic root of 320800980 is about 684.5605933964.

The spelling of 320800980 in words is "three hundred twenty million, eight hundred thousand, nine hundred eighty".