27689028 has 12 divisors (see below), whose sum is σ = 64607760. Its totient is φ = 9229672.

The previous prime is 27689017. The next prime is 27689029. The reversal of 27689028 is 82098672.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (27689029) 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, 1153698 + ... + 1153721.

It is an arithmetic number, because the mean of its divisors is an integer number (5383980).

Almost surely, 2^27689028 is an apocalyptic number.

It is an amenable number.

27689028 is an abundant number, since it is smaller than the sum of its proper divisors (36918732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27689028 is a wasteful number, since it uses less digits than its factorization.

27689028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2307426 (or 2307424 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 27689028 is about 5262.0364879009. The cubic root of 27689028 is about 302.5305499278.

The spelling of 27689028 in words is "twenty-seven million, six hundred eighty-nine thousand, twenty-eight".