320940456 has 32 divisors (see below), whose sum is σ = 821923200. Its totient is φ = 104370560.

The previous prime is 320940421. The next prime is 320940469. The reversal of 320940456 is 654049023.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162096 + ... + 164063.

It is an arithmetic number, because the mean of its divisors is an integer number (25685100).

Almost surely, 2^320940456 is an apocalyptic number.

It is an amenable number.

320940456 is an abundant number, since it is smaller than the sum of its proper divisors (500982744).

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

320940456 is a wasteful number, since it uses less digits than its factorization.

320940456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326209 (or 326205 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 320940456 is about 17914.8110791044. The cubic root of 320940456 is about 684.6597887908.

Adding to 320940456 its reverse (654049023), we get a palindrome (974989479).

The spelling of 320940456 in words is "three hundred twenty million, nine hundred forty thousand, four hundred fifty-six".