27691130 has 16 divisors (see below), whose sum is σ = 52776360. Its totient is φ = 10424832.

The previous prime is 27691117. The next prime is 27691187. The reversal of 27691130 is 3119672.

It can be written as a sum of positive squares in 4 ways, for example, as 23107249 + 4583881 = 4807^2 + 2141^2 .

It is a junction number, because it is equal to n+sod(n) for n = 27691093 and 27691102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81275 + ... + 81614.

Almost surely, 2^27691130 is an apocalyptic number.

27691130 is a deficient number, since it is larger than the sum of its proper divisors (25085230).

27691130 is a wasteful number, since it uses less digits than its factorization.

27691130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162913.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 27691130 is about 5262.2362166668. The cubic root of 27691130 is about 302.5382052239.

The spelling of 27691130 in words is "twenty-seven million, six hundred ninety-one thousand, one hundred thirty".