322720272 has 90 divisors (see below), whose sum is σ = 1050647598. Its totient is φ = 92203776.

The previous prime is 322720259. The next prime is 322720303. The reversal of 322720272 is 272027223.

322720272 is a `hidden beast` number, since 322 + 72 + 0 + 272 = 666.

It can be written as a sum of positive squares in only one way, i.e., 238887936 + 83832336 = 15456^2 + 9156^2 .

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 17 ways as a sum of consecutive naturals, for example, 15813 + ... + 29924.

Almost surely, 2^322720272 is an apocalyptic number.

It is an amenable number.

322720272 is an abundant number, since it is smaller than the sum of its proper divisors (727927326).

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

322720272 is a wasteful number, since it uses less digits than its factorization.

322720272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45765 (or 45749 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 322720272 is about 17964.4168288314. The cubic root of 322720272 is about 685.9230789776.

Adding to 322720272 its reverse (272027223), we get a palindrome (594747495).

The spelling of 322720272 in words is "three hundred twenty-two million, seven hundred twenty thousand, two hundred seventy-two".