320434912 has 36 divisors (see below), whose sum is σ = 733856760. Its totient is φ = 137328576.

The previous prime is 320434909. The next prime is 320434927. The reversal of 320434912 is 219434023.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 100612 + ... + 103747.

It is an arithmetic number, because the mean of its divisors is an integer number (20384910).

Almost surely, 2^320434912 is an apocalyptic number.

320434912 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

320434912 is an abundant number, since it is smaller than the sum of its proper divisors (413421848).

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

320434912 is a wasteful number, since it uses less digits than its factorization.

320434912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204383 (or 204368 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 320434912 is about 17900.6958523964. The cubic root of 320434912 is about 684.3001088362.

Adding to 320434912 its reverse (219434023), we get a palindrome (539868935).

The spelling of 320434912 in words is "three hundred twenty million, four hundred thirty-four thousand, nine hundred twelve".