322765920 has 288 divisors, whose sum is σ = 1188794880. Its totient is φ = 79488000.

The previous prime is 322765909. The next prime is 322765943. The reversal of 322765920 is 29567223.

It is a tau number, because it is divible by the number of its divisors (288).

It is a super-2 number, since 2×322765920² = 208355678226892800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1285795 + ... + 1286045.

It is an arithmetic number, because the mean of its divisors is an integer number (4127760).

Almost surely, 2^322765920 is an apocalyptic number.

322765920 is a gapful number since it is divisible by the number (30) 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 322765920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (594397440).

322765920 is an abundant number, since it is smaller than the sum of its proper divisors (866028960).

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

322765920 is a wasteful number, since it uses less digits than its factorization.

322765920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 322765920 is about 17965.6872955086. The cubic root of 322765920 is about 685.9554181717.

The spelling of 322765920 in words is "three hundred twenty-two million, seven hundred sixty-five thousand, nine hundred twenty".