322212864 has 88 divisors (see below), whose sum is σ = 875460960. Its totient is φ = 105324544.

The previous prime is 322212859. The next prime is 322212901. The reversal of 322212864 is 468212223.

It is a super-2 number, since 2×322212864² = 207642259454164992, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 161827 + ... + 163805.

It is an arithmetic number, because the mean of its divisors is an integer number (9948420).

Almost surely, 2^322212864 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 322212864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (437730480).

322212864 is an abundant number, since it is smaller than the sum of its proper divisors (553248096).

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

322212864 is a wasteful number, since it uses less digits than its factorization.

322212864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055 (or 2037 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

The square root of 322212864 is about 17950.2886884863. The cubic root of 322212864 is about 685.5634017227.

The spelling of 322212864 in words is "three hundred twenty-two million, two hundred twelve thousand, eight hundred sixty-four".