27913871 has 4 divisors (see below), whose sum is σ = 28227600. Its totient is φ = 27600144.

The previous prime is 27913859. The next prime is 27913877. The reversal of 27913871 is 17831972.

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 27913871 - 2¹⁰ = 27912847 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 (27913877) 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, 156731 + ... + 156908.

It is an arithmetic number, because the mean of its divisors is an integer number (7056900).

Almost surely, 2^27913871 is an apocalyptic number.

27913871 is a deficient number, since it is larger than the sum of its proper divisors (313729).

27913871 is an equidigital number, since it uses as much as digits as its factorization.

27913871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313728.

The product of its digits is 21168, while the sum is 38.

The square root of 27913871 is about 5283.3579284391. The cubic root of 27913871 is about 303.3472221901.

The spelling of 27913871 in words is "twenty-seven million, nine hundred thirteen thousand, eight hundred seventy-one".