27792091 has 4 divisors (see below), whose sum is σ = 27832000. Its totient is φ = 27752184.

The previous prime is 27792071. The next prime is 27792101. The reversal of 27792091 is 19029772.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27792091 - 2⁹ = 27791579 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27792091.

It is not an unprimeable number, because it can be changed into a prime (27792001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18891 + ... + 20308.

It is an arithmetic number, because the mean of its divisors is an integer number (6958000).

Almost surely, 2^27792091 is an apocalyptic number.

27792091 is a deficient number, since it is larger than the sum of its proper divisors (39909).

27792091 is an equidigital number, since it uses as much as digits as its factorization.

27792091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39908.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 27792091 is about 5271.8204635591. The cubic root of 27792091 is about 302.9054409085.

The spelling of 27792091 in words is "twenty-seven million, seven hundred ninety-two thousand, ninety-one".