27320289 has 4 divisors (see below), whose sum is σ = 36427056. Its totient is φ = 18213524.

The previous prime is 27320273. The next prime is 27320299. The reversal of 27320289 is 98202372.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27320289 - 2⁴ = 27320273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27320219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4553379 + ... + 4553384.

It is an arithmetic number, because the mean of its divisors is an integer number (9106764).

Almost surely, 2^27320289 is an apocalyptic number.

It is an amenable number.

27320289 is a deficient number, since it is larger than the sum of its proper divisors (9106767).

27320289 is an equidigital number, since it uses as much as digits as its factorization.

27320289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9106766.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 27320289 is about 5226.8813837699. The cubic root of 27320289 is about 301.1815955520.

The spelling of 27320289 in words is "twenty-seven million, three hundred twenty thousand, two hundred eighty-nine".