321939672 has 32 divisors (see below), whose sum is σ = 832604400. Its totient is φ = 103612544.

The previous prime is 321939661. The next prime is 321939677. The reversal of 321939672 is 276939123.

321939672 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321939677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230583 + ... + 231974.

Almost surely, 2^321939672 is an apocalyptic number.

It is an amenable number.

321939672 is an abundant number, since it is smaller than the sum of its proper divisors (510664728).

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

321939672 is a wasteful number, since it uses less digits than its factorization.

321939672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462595 (or 462591 counting only the distinct ones).

The product of its digits is 122472, while the sum is 42.

The square root of 321939672 is about 17942.6773921843. The cubic root of 321939672 is about 685.3695925830.

The spelling of 321939672 in words is "three hundred twenty-one million, nine hundred thirty-nine thousand, six hundred seventy-two".