27974889 has 12 divisors (see below), whose sum is σ = 41905136. Its totient is φ = 18649764.

The previous prime is 27974887. The next prime is 27974941. The reversal of 27974889 is 98847972.

It is not a de Polignac number, because 27974889 - 2¹ = 27974887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27974887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57319 + ... + 57804.

Almost surely, 2^27974889 is an apocalyptic number.

It is an amenable number.

27974889 is a deficient number, since it is larger than the sum of its proper divisors (13930247).

27974889 is an equidigital number, since it uses as much as digits as its factorization.

27974889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115138 (or 115126 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The square root of 27974889 is about 5289.1293234331. The cubic root of 27974889 is about 303.5680941021.

The spelling of 27974889 in words is "twenty-seven million, nine hundred seventy-four thousand, eight hundred eighty-nine".