27228985 has 16 divisors (see below), whose sum is σ = 39540096. Its totient is φ = 17572608.

The previous prime is 27228979. The next prime is 27229021. The reversal of 27228985 is 58982272.

It is a cyclic number.

It is not a de Polignac number, because 27228985 - 2⁵ = 27228953 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 22287 + ... + 23476.

It is an arithmetic number, because the mean of its divisors is an integer number (2471256).

Almost surely, 2^27228985 is an apocalyptic number.

It is an amenable number.

27228985 is a deficient number, since it is larger than the sum of its proper divisors (12311111).

27228985 is a wasteful number, since it uses less digits than its factorization.

27228985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45792.

The product of its digits is 161280, while the sum is 43.

The square root of 27228985 is about 5218.1399942892. The cubic root of 27228985 is about 300.8457062886.

The spelling of 27228985 in words is "twenty-seven million, two hundred twenty-eight thousand, nine hundred eighty-five".