27788923 has 2 divisors, whose sum is σ = 27788924. Its totient is φ = 27788922.

The previous prime is 27788881. The next prime is 27788951. The reversal of 27788923 is 32988772.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27788923 is a prime.

It is not a weakly prime, because it can be changed into another prime (27788953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13894461 + 13894462.

It is an arithmetic number, because the mean of its divisors is an integer number (13894462).

Almost surely, 2^27788923 is an apocalyptic number.

27788923 is a deficient number, since it is larger than the sum of its proper divisors (1).

27788923 is an equidigital number, since it uses as much as digits as its factorization.

27788923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 46.

The square root of 27788923 is about 5271.5199895286. The cubic root of 27788923 is about 302.8939311484.

The spelling of 27788923 in words is "twenty-seven million, seven hundred eighty-eight thousand, nine hundred twenty-three".