320775984 has 40 divisors (see below), whose sum is σ = 920747120. Its totient is φ = 106925184.

The previous prime is 320775971. The next prime is 320775997. The reversal of 320775984 is 489577023.

It is an interprime number because it is at equal distance from previous prime (320775971) and next prime (320775997).

It is a super-2 number, since 2×320775984² = 205794463822336512, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370837 + ... + 371700.

It is an arithmetic number, because the mean of its divisors is an integer number (23018678).

Almost surely, 2^320775984 is an apocalyptic number.

It is an amenable number.

320775984 is an abundant number, since it is smaller than the sum of its proper divisors (599971136).

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

320775984 is a wasteful number, since it uses less digits than its factorization.

320775984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742554 (or 742542 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 320775984 is about 17910.2200991501. The cubic root of 320775984 is about 684.5428131919.

The spelling of 320775984 in words is "three hundred twenty million, seven hundred seventy-five thousand, nine hundred eighty-four".