322712925728 has 54 divisors (see below), whose sum is σ = 639563459157. Its totient is φ = 160291175680.

The previous prime is 322712925727. The next prime is 322712925757. The reversal of 322712925728 is 827529217223.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 291181110544 + 31531815184 = 539612^2 + 177572^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=401692.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (322712925727) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 748753673 + ... + 748754103.

Almost surely, 2^322712925728 is an apocalyptic number.

It is an amenable number.

322712925728 is a deficient number, since it is larger than the sum of its proper divisors (316850533429).

322712925728 is an frugal number, since it uses more digits than its factorization.

322712925728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338 (or 666 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 50.

Multiplying 322712925728 by its sum of digits (50), we get a square (16135646286400 = 4016920²).

The spelling of 322712925728 in words is "three hundred twenty-two billion, seven hundred twelve million, nine hundred twenty-five thousand, seven hundred twenty-eight".