27865197 has 12 divisors (see below), whose sum is σ = 40568320. Its totient is φ = 18429768.

The previous prime is 27865151. The next prime is 27865241. The reversal of 27865197 is 79156872.

It is not a de Polignac number, because 27865197 - 2⁶ = 27865133 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 (27865297) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11047 + ... + 13332.

Almost surely, 2^27865197 is an apocalyptic number.

It is an amenable number.

27865197 is a deficient number, since it is larger than the sum of its proper divisors (12703123).

27865197 is a wasteful number, since it uses less digits than its factorization.

27865197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24512 (or 24509 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 27865197 is about 5278.7495678427. The cubic root of 27865197 is about 303.1708019783.

The spelling of 27865197 in words is "twenty-seven million, eight hundred sixty-five thousand, one hundred ninety-seven".