27816397 has 8 divisors (see below), whose sum is σ = 31881600. Its totient is φ = 23774064.

The previous prime is 27816377. The next prime is 27816443. The reversal of 27816397 is 79361872.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27816397 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 (27816337) 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 7 ways as a sum of consecutive naturals, for example, 3022 + ... + 8047.

It is an arithmetic number, because the mean of its divisors is an integer number (3985200).

Almost surely, 2^27816397 is an apocalyptic number.

It is an amenable number.

27816397 is a deficient number, since it is larger than the sum of its proper divisors (4065203).

27816397 is a wasteful number, since it uses less digits than its factorization.

27816397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11435.

The product of its digits is 127008, while the sum is 43.

The square root of 27816397 is about 5274.1252355248. The cubic root of 27816397 is about 302.9937187136.

The spelling of 27816397 in words is "twenty-seven million, eight hundred sixteen thousand, three hundred ninety-seven".