320491512 has 64 divisors (see below), whose sum is σ = 971193600. Its totient is φ = 97117920.

The previous prime is 320491489. The next prime is 320491541. The reversal of 320491512 is 215194023.

It is a super-2 number, since 2×320491512² = 205429618528092288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 65068 + ... + 69819.

It is an arithmetic number, because the mean of its divisors is an integer number (15174900).

Almost surely, 2^320491512 is an apocalyptic number.

It is an amenable number.

320491512 is an abundant number, since it is smaller than the sum of its proper divisors (650702088).

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

320491512 is a wasteful number, since it uses less digits than its factorization.

320491512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134913 (or 134903 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 320491512 is about 17902.2767267183. The cubic root of 320491512 is about 684.3403968993.

The spelling of 320491512 in words is "three hundred twenty million, four hundred ninety-one thousand, five hundred twelve".