27239289 has 32 divisors (see below), whose sum is σ = 46519296. Its totient is φ = 13763520.

The previous prime is 27239281. The next prime is 27239309. The reversal of 27239289 is 98293272.

It is not a de Polignac number, because 27239289 - 2³ = 27239281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27239289.

It is not an unprimeable number, because it can be changed into a prime (27239281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6954 + ... + 10140.

It is an arithmetic number, because the mean of its divisors is an integer number (1453728).

Almost surely, 2^27239289 is an apocalyptic number.

It is an amenable number.

27239289 is a deficient number, since it is larger than the sum of its proper divisors (19280007).

27239289 is a wasteful number, since it uses less digits than its factorization.

27239289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3245.

The product of its digits is 108864, while the sum is 42.

The square root of 27239289 is about 5219.1272258875. The cubic root of 27239289 is about 300.8836502077.

The spelling of 27239289 in words is "twenty-seven million, two hundred thirty-nine thousand, two hundred eighty-nine".