27882791 has 4 divisors (see below), whose sum is σ = 28531272. Its totient is φ = 27234312.

The previous prime is 27882781. The next prime is 27882853. The reversal of 27882791 is 19728872.

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 27882791 - 2¹⁰ = 27881767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27882731) 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, 324176 + ... + 324261.

It is an arithmetic number, because the mean of its divisors is an integer number (7132818).

Almost surely, 2^27882791 is an apocalyptic number.

27882791 is a deficient number, since it is larger than the sum of its proper divisors (648481).

27882791 is an equidigital number, since it uses as much as digits as its factorization.

27882791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648480.

The product of its digits is 112896, while the sum is 44.

The square root of 27882791 is about 5280.4157980220. The cubic root of 27882791 is about 303.2345955923.

The spelling of 27882791 in words is "twenty-seven million, eight hundred eighty-two thousand, seven hundred ninety-one".