27416891 has 4 divisors (see below), whose sum is σ = 27581232. Its totient is φ = 27252552.

The previous prime is 27416881. The next prime is 27416899. The reversal of 27416891 is 19861472.

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 27416891 - 2¹⁰ = 27415867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27416899) 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, 81920 + ... + 82253.

It is an arithmetic number, because the mean of its divisors is an integer number (6895308).

Almost surely, 2^27416891 is an apocalyptic number.

27416891 is a deficient number, since it is larger than the sum of its proper divisors (164341).

27416891 is a wasteful number, since it uses less digits than its factorization.

27416891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164340.

The product of its digits is 24192, while the sum is 38.

The square root of 27416891 is about 5236.1141125839. The cubic root of 27416891 is about 301.5361613425.

The spelling of 27416891 in words is "twenty-seven million, four hundred sixteen thousand, eight hundred ninety-one".