322428656 has 80 divisors (see below), whose sum is σ = 711323520. Its totient is φ = 140279040.

The previous prime is 322428593. The next prime is 322428661. The reversal of 322428656 is 656824223.

322428656 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 an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 435935 + ... + 436673.

It is an arithmetic number, because the mean of its divisors is an integer number (8891544).

Almost surely, 2^322428656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 322428656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355661760).

322428656 is an abundant number, since it is smaller than the sum of its proper divisors (388894864).

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

322428656 is a wasteful number, since it uses less digits than its factorization.

322428656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862 (or 856 counting only the distinct ones).

The product of its digits is 138240, while the sum is 38.

The square root of 322428656 is about 17956.2985049815. The cubic root of 322428656 is about 685.7164124603.

The spelling of 322428656 in words is "three hundred twenty-two million, four hundred twenty-eight thousand, six hundred fifty-six".