320504874 has 16 divisors (see below), whose sum is σ = 651875040. Its totient is φ = 105024080.

The previous prime is 320504869. The next prime is 320504879. The reversal of 320504874 is 478405023.

It is an interprime number because it is at equal distance from previous prime (320504869) and next prime (320504879).

It is not an unprimeable number, because it can be changed into a prime (320504879) by changing a digit.

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, 452337 + ... + 453044.

It is an arithmetic number, because the mean of its divisors is an integer number (40742190).

Almost surely, 2^320504874 is an apocalyptic number.

320504874 is an abundant number, since it is smaller than the sum of its proper divisors (331370166).

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

320504874 is a wasteful number, since it uses less digits than its factorization.

320504874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905445.

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 320504874 is about 17902.6499155851. The cubic root of 320504874 is about 684.3499073221.

Adding to 320504874 its reverse (478405023), we get a palindrome (798909897).

The spelling of 320504874 in words is "three hundred twenty million, five hundred four thousand, eight hundred seventy-four".