27222309 has 12 divisors (see below), whose sum is σ = 40589952. Its totient is φ = 17562600.

The previous prime is 27222289. The next prime is 27222313. The reversal of 27222309 is 90322272.

It is not a de Polignac number, because 27222309 - 2⁹ = 27221797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27222109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48507 + ... + 49064.

It is an arithmetic number, because the mean of its divisors is an integer number (3382496).

Almost surely, 2^27222309 is an apocalyptic number.

It is an amenable number.

27222309 is a deficient number, since it is larger than the sum of its proper divisors (13367643).

27222309 is a wasteful number, since it uses less digits than its factorization.

27222309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97608 (or 97605 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 27222309 is about 5217.5002635362. The cubic root of 27222309 is about 300.8211171715.

The spelling of 27222309 in words is "twenty-seven million, two hundred twenty-two thousand, three hundred nine".