27804897 has 16 divisors (see below), whose sum is σ = 41759680. Its totient is φ = 18281376.

The previous prime is 27804869. The next prime is 27804899. The reversal of 27804897 is 79840872.

It is not a de Polignac number, because 27804897 - 2⁸ = 27804641 is a prime.

It is a super-2 number, since 2×27804897² = 1546224594361218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27804899) 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, 5083 + ... + 9024.

It is an arithmetic number, because the mean of its divisors is an integer number (2609980).

Almost surely, 2^27804897 is an apocalyptic number.

27804897 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

27804897 is a deficient number, since it is larger than the sum of its proper divisors (13954783).

27804897 is a wasteful number, since it uses less digits than its factorization.

27804897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14189 (or 14183 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 27804897 is about 5273.0348946314. The cubic root of 27804897 is about 302.9519578767.

The spelling of 27804897 in words is "twenty-seven million, eight hundred four thousand, eight hundred ninety-seven".