321608832 has 64 divisors (see below), whose sum is σ = 857338560. Its totient is φ = 106818560.

The previous prime is 321608809. The next prime is 321608851. The reversal of 321608832 is 238806123.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 321608793 and 321608802.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118078 + ... + 120770.

It is an arithmetic number, because the mean of its divisors is an integer number (13395915).

Almost surely, 2^321608832 is an apocalyptic number.

321608832 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321608832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (428669280).

321608832 is an abundant number, since it is smaller than the sum of its proper divisors (535729728).

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

321608832 is a wasteful number, since it uses less digits than its factorization.

321608832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3021 (or 3009 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 321608832 is about 17933.4556625320. The cubic root of 321608832 is about 685.1347396874.

The spelling of 321608832 in words is "three hundred twenty-one million, six hundred eight thousand, eight hundred thirty-two".