320456356 has 24 divisors (see below), whose sum is σ = 643980960. Its totient is φ = 137995200.

The previous prime is 320456329. The next prime is 320456399. The reversal of 320456356 is 653654023.

It is a super-2 number, since 2×320456356² = 205384552201597472, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190825 + ... + 192496.

It is an arithmetic number, because the mean of its divisors is an integer number (26832540).

Almost surely, 2^320456356 is an apocalyptic number.

It is an amenable number.

320456356 is an abundant number, since it is smaller than the sum of its proper divisors (323524604).

320456356 is a wasteful number, since it uses less digits than its factorization.

320456356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383355 (or 383353 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 34.

The square root of 320456356 is about 17901.2948135044. The cubic root of 320456356 is about 684.3153733029.

The spelling of 320456356 in words is "three hundred twenty million, four hundred fifty-six thousand, three hundred fifty-six".