322640880 has 40 divisors (see below), whose sum is σ = 1000187472. Its totient is φ = 86037504.

The previous prime is 322640873. The next prime is 322640917. The reversal of 322640880 is 88046223.

322640880 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

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, 671929 + ... + 672408.

Almost surely, 2^322640880 is an apocalyptic number.

322640880 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

322640880 is an abundant number, since it is smaller than the sum of its proper divisors (677546592).

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

322640880 is a wasteful number, since it uses less digits than its factorization.

322640880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344353 (or 1344347 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 322640880 is about 17962.2069913471. The cubic root of 322640880 is about 685.8668266790.

The spelling of 322640880 in words is "three hundred twenty-two million, six hundred forty thousand, eight hundred eighty".