27796971 has 4 divisors (see below), whose sum is σ = 37062632. Its totient is φ = 18531312.

The previous prime is 27796961. The next prime is 27796973. The reversal of 27796971 is 17969772.

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

It is not a de Polignac number, because 27796971 - 2⁵ = 27796939 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 27796971.

It is not an unprimeable number, because it can be changed into a prime (27796973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4632826 + ... + 4632831.

It is an arithmetic number, because the mean of its divisors is an integer number (9265658).

Almost surely, 2^27796971 is an apocalyptic number.

27796971 is a deficient number, since it is larger than the sum of its proper divisors (9265661).

27796971 is an equidigital number, since it uses as much as digits as its factorization.

27796971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9265660.

The product of its digits is 333396, while the sum is 48.

The square root of 27796971 is about 5272.2832814635. The cubic root of 27796971 is about 302.9231688782.

The spelling of 27796971 in words is "twenty-seven million, seven hundred ninety-six thousand, nine hundred seventy-one".