27691044 has 24 divisors (see below), whose sum is σ = 64770720. Its totient is φ = 9207744.

The previous prime is 27691043. The next prime is 27691063. The reversal of 27691044 is 44019672.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 27690996 and 27691014.

It is not an unprimeable number, because it can be changed into a prime (27691043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2712 + ... + 7920.

It is an arithmetic number, because the mean of its divisors is an integer number (2698780).

Almost surely, 2^27691044 is an apocalyptic number.

It is an amenable number.

27691044 is an abundant number, since it is smaller than the sum of its proper divisors (37079676).

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

27691044 is a wasteful number, since it uses less digits than its factorization.

27691044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5659 (or 5657 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 27691044 is about 5262.2280452295. The cubic root of 27691044 is about 302.5378920272.

The spelling of 27691044 in words is "twenty-seven million, six hundred ninety-one thousand, forty-four".