27481689 has 6 divisors (see below), whose sum is σ = 39695786. Its totient is φ = 18321120.

The previous prime is 27481679. The next prime is 27481703. The reversal of 27481689 is 98618472.

It can be written as a sum of positive squares in only one way, i.e., 27248400 + 233289 = 5220^2 + 483^2 .

It is not a de Polignac number, because 27481689 - 2⁷ = 27481561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27481679) 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 5 ways as a sum of consecutive naturals, for example, 1526752 + ... + 1526769.

Almost surely, 2^27481689 is an apocalyptic number.

It is an amenable number.

27481689 is a deficient number, since it is larger than the sum of its proper divisors (12214097).

27481689 is a wasteful number, since it uses less digits than its factorization.

27481689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3053527 (or 3053524 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 27481689 is about 5242.2980647804. The cubic root of 27481689 is about 301.7735280005.

The spelling of 27481689 in words is "twenty-seven million, four hundred eighty-one thousand, six hundred eighty-nine".