306669272 has 64 divisors (see below), whose sum is σ = 744979200. Its totient is φ = 114929280.

The previous prime is 306669269. The next prime is 306669323. The reversal of 306669272 is 272966603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2747 + ... + 24917.

It is an arithmetic number, because the mean of its divisors is an integer number (11640300).

Almost surely, 2^306669272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 306669272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (372489600).

306669272 is an abundant number, since it is smaller than the sum of its proper divisors (438309928).

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

306669272 is a wasteful number, since it uses less digits than its factorization.

306669272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22216 (or 22212 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 41.

The square root of 306669272 is about 17511.9751027690. The cubic root of 306669272 is about 674.3573376573.

The spelling of 306669272 in words is "three hundred six million, six hundred sixty-nine thousand, two hundred seventy-two".