322290644 has 12 divisors (see below), whose sum is σ = 607394004. Its totient is φ = 148749504.

The previous prime is 322290643. The next prime is 322290653. The reversal of 322290644 is 446092223.

It can be written as a sum of positive squares in 2 ways, for example, as 175880644 + 146410000 = 13262^2 + 12100^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 322290644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (322290643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3098897 + ... + 3099000.

It is an arithmetic number, because the mean of its divisors is an integer number (50616167).

Almost surely, 2^322290644 is an apocalyptic number.

It is an amenable number.

322290644 is a deficient number, since it is larger than the sum of its proper divisors (285103360).

322290644 is a wasteful number, since it uses less digits than its factorization.

322290644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6197914 (or 6197912 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 322290644 is about 17952.4550967270. The cubic root of 322290644 is about 685.6185607364.

The spelling of 322290644 in words is "three hundred twenty-two million, two hundred ninety thousand, six hundred forty-four".