27776091 has 12 divisors (see below), whose sum is σ = 43081512. Its totient is φ = 15871968.

The previous prime is 27776087. The next prime is 27776101. The reversal of 27776091 is 19067772.

It is not a de Polignac number, because 27776091 - 2² = 27776087 is a prime.

It is a super-2 number, since 2×27776091² = 1543022462480562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27776041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94330 + ... + 94623.

It is an arithmetic number, because the mean of its divisors is an integer number (3590126).

Almost surely, 2^27776091 is an apocalyptic number.

27776091 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

27776091 is a deficient number, since it is larger than the sum of its proper divisors (15305421).

27776091 is a wasteful number, since it uses less digits than its factorization.

27776091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188970 (or 188963 counting only the distinct ones).

The product of its (nonzero) digits is 37044, while the sum is 39.

The square root of 27776091 is about 5270.3027427274. The cubic root of 27776091 is about 302.8473018573.

The spelling of 27776091 in words is "twenty-seven million, seven hundred seventy-six thousand, ninety-one".