27318897 has 16 divisors (see below), whose sum is σ = 40552960. Its totient is φ = 18176400.

The previous prime is 27318887. The next prime is 27318901. The reversal of 27318897 is 79881372.

It is not a de Polignac number, because 27318897 - 2¹⁶ = 27253361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27318887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26247 + ... + 27267.

It is an arithmetic number, because the mean of its divisors is an integer number (2534560).

Almost surely, 2^27318897 is an apocalyptic number.

27318897 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

27318897 is a deficient number, since it is larger than the sum of its proper divisors (13234063).

27318897 is a wasteful number, since it uses less digits than its factorization.

27318897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021 (or 2015 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 27318897 is about 5226.7482242786. The cubic root of 27318897 is about 301.1764802828.

It can be divided in two parts, 2731 and 8897, that added together give a triangular number (11628 = T₁₅₂).

The spelling of 27318897 in words is "twenty-seven million, three hundred eighteen thousand, eight hundred ninety-seven".