320673632 has 12 divisors (see below), whose sum is σ = 631326276. Its totient is φ = 160336800.

The previous prime is 320673623. The next prime is 320673671. The reversal of 320673632 is 236376023.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 10021051 = 320673632 / (3 + 2 + 0 + 6 + 7 + 3 + 6 + 3 + 2).

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 as a sum of consecutive naturals, namely, 5010494 + ... + 5010557.

It is an arithmetic number, because the mean of its divisors is an integer number (52610523).

Almost surely, 2^320673632 is an apocalyptic number.

320673632 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

320673632 is a deficient number, since it is larger than the sum of its proper divisors (310652644).

320673632 is a wasteful number, since it uses less digits than its factorization.

320673632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10021061 (or 10021053 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 32.

The square root of 320673632 is about 17907.3625081976. The cubic root of 320673632 is about 684.4699983276.

The spelling of 320673632 in words is "three hundred twenty million, six hundred seventy-three thousand, six hundred thirty-two".