320760864 has 48 divisors (see below), whose sum is σ = 935555040. Its totient is φ = 106920000.

The previous prime is 320760827. The next prime is 320760877. The reversal of 320760864 is 468067023.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 184762 + ... + 186489.

It is an arithmetic number, because the mean of its divisors is an integer number (19490730).

Almost surely, 2^320760864 is an apocalyptic number.

It is an amenable number.

320760864 is an abundant number, since it is smaller than the sum of its proper divisors (614794176).

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

320760864 is a wasteful number, since it uses less digits than its factorization.

320760864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371270 (or 371256 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 320760864 is about 17909.7979888105. The cubic root of 320760864 is about 684.5320575551.

The spelling of 320760864 in words is "three hundred twenty million, seven hundred sixty thousand, eight hundred sixty-four".