321056832 has 224 divisors, whose sum is σ = 983162880. Its totient is φ = 91791360.

The previous prime is 321056803. The next prime is 321056833. The reversal of 321056832 is 238650123.

It is a self number, because there is not a number n which added to its sum of digits gives 321056832.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321056833) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1922413 + ... + 1922579.

It is an arithmetic number, because the mean of its divisors is an integer number (4389120).

Almost surely, 2^321056832 is an apocalyptic number.

321056832 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 321056832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (491581440).

321056832 is an abundant number, since it is smaller than the sum of its proper divisors (662106048).

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

321056832 is a wasteful number, since it uses less digits than its factorization.

321056832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 321056832 is about 17918.0588234329. The cubic root of 321056832 is about 684.7425334634.

The spelling of 321056832 in words is "three hundred twenty-one million, fifty-six thousand, eight hundred thirty-two".