320465500 has 48 divisors (see below), whose sum is σ = 702846144. Its totient is φ = 127646400.

The previous prime is 320465479. The next prime is 320465503. The reversal of 320465500 is 5564023.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320465503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130282 + ... + 132718.

It is an arithmetic number, because the mean of its divisors is an integer number (14642628).

Almost surely, 2^320465500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320465500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (351423072).

320465500 is an abundant number, since it is smaller than the sum of its proper divisors (382380644).

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

320465500 is a wasteful number, since it uses less digits than its factorization.

320465500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2719 (or 2707 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 320465500 is about 17901.5502122023. The cubic root of 320465500 is about 684.3218820626.

The spelling of 320465500 in words is "three hundred twenty million, four hundred sixty-five thousand, five hundred".