27313891 has 8 divisors (see below), whose sum is σ = 29927664. Its totient is φ = 24721920.

The previous prime is 27313877. The next prime is 27313927. The reversal of 27313891 is 19831372.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27313891 - 2⁹ = 27313379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27313841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2766 + ... + 7891.

It is an arithmetic number, because the mean of its divisors is an integer number (3740958).

Almost surely, 2^27313891 is an apocalyptic number.

27313891 is a deficient number, since it is larger than the sum of its proper divisors (2613773).

27313891 is a wasteful number, since it uses less digits than its factorization.

27313891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10901.

The product of its digits is 9072, while the sum is 34.

The square root of 27313891 is about 5226.2693195051. The cubic root of 27313891 is about 301.1580829861.

The spelling of 27313891 in words is "twenty-seven million, three hundred thirteen thousand, eight hundred ninety-one".