307722972 has 12 divisors (see below), whose sum is σ = 718020296. Its totient is φ = 102574320.

The previous prime is 307722971. The next prime is 307722977. The reversal of 307722972 is 279227703.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 307722972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (307722971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12821779 + ... + 12821802.

Almost surely, 2^307722972 is an apocalyptic number.

It is an amenable number.

307722972 is an abundant number, since it is smaller than the sum of its proper divisors (410297324).

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

307722972 is a wasteful number, since it uses less digits than its factorization.

307722972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25643588 (or 25643586 counting only the distinct ones).

The product of its (nonzero) digits is 74088, while the sum is 39.

The square root of 307722972 is about 17542.0344316160. The cubic root of 307722972 is about 675.1288072431.

The spelling of 307722972 in words is "three hundred seven million, seven hundred twenty-two thousand, nine hundred seventy-two".