27691434 has 12 divisors (see below), whose sum is σ = 59998146. Its totient is φ = 9230472.

The previous prime is 27691427. The next prime is 27691451. The reversal of 27691434 is 43419672.

It can be written as a sum of positive squares in only one way, i.e., 20385225 + 7306209 = 4515^2 + 2703^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 769189 + ... + 769224.

Almost surely, 2^27691434 is an apocalyptic number.

27691434 is an abundant number, since it is smaller than the sum of its proper divisors (32306712).

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

27691434 is a wasteful number, since it uses less digits than its factorization.

27691434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538421 (or 1538418 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 27691434 is about 5262.2651016459. The cubic root of 27691434 is about 302.5393123327.

The spelling of 27691434 in words is "twenty-seven million, six hundred ninety-one thousand, four hundred thirty-four".