27897365 has 16 divisors (see below), whose sum is σ = 34761216. Its totient is φ = 21470400.

The previous prime is 27897319. The next prime is 27897403. The reversal of 27897365 is 56379872.

It is not a de Polignac number, because 27897365 - 2¹⁸ = 27635221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 32279 + ... + 33131.

It is an arithmetic number, because the mean of its divisors is an integer number (2172576).

Almost surely, 2^27897365 is an apocalyptic number.

It is an amenable number.

27897365 is a deficient number, since it is larger than the sum of its proper divisors (6863851).

27897365 is a wasteful number, since it uses less digits than its factorization.

27897365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100.

The product of its digits is 635040, while the sum is 47.

The square root of 27897365 is about 5281.7956227026. The cubic root of 27897365 is about 303.2874187505.

The spelling of 27897365 in words is "twenty-seven million, eight hundred ninety-seven thousand, three hundred sixty-five".