322138680 has 128 divisors (see below), whose sum is σ = 992908800. Its totient is φ = 83584512.

The previous prime is 322138679. The next prime is 322138721. The reversal of 322138680 is 86831223.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 827926 + ... + 828314.

It is an arithmetic number, because the mean of its divisors is an integer number (7757100).

Almost surely, 2^322138680 is an apocalyptic number.

322138680 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 322138680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (496454400).

322138680 is an abundant number, since it is smaller than the sum of its proper divisors (670770120).

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

322138680 is a wasteful number, since it uses less digits than its factorization.

322138680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573 (or 569 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 322138680 is about 17948.2221960839. Note that the first 3 decimals coincide. The cubic root of 322138680 is about 685.5107846025.

The spelling of 322138680 in words is "three hundred twenty-two million, one hundred thirty-eight thousand, six hundred eighty".