27230191 has 4 divisors (see below), whose sum is σ = 27894384. Its totient is φ = 26566000.

The previous prime is 27230179. The next prime is 27230201. The reversal of 27230191 is 19103272.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27230191 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 (27230111) 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, 332035 + ... + 332116.

It is an arithmetic number, because the mean of its divisors is an integer number (6973596).

Almost surely, 2^27230191 is an apocalyptic number.

27230191 is a deficient number, since it is larger than the sum of its proper divisors (664193).

27230191 is an equidigital number, since it uses as much as digits as its factorization.

27230191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664192.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 27230191 is about 5218.2555514271. The cubic root of 27230191 is about 300.8501478125.

The spelling of 27230191 in words is "twenty-seven million, two hundred thirty thousand, one hundred ninety-one".