27608021 has 12 divisors (see below), whose sum is σ = 32864832. Its totient is φ = 23111928.

The previous prime is 27608003. The next prime is 27608023. The reversal of 27608021 is 12080672.

It is not a de Polignac number, because 27608021 - 2²² = 23413717 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27608023) 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 11 ways as a sum of consecutive naturals, for example, 4445 + ... + 8658.

It is an arithmetic number, because the mean of its divisors is an integer number (2738736).

Almost surely, 2^27608021 is an apocalyptic number.

It is an amenable number.

27608021 is a deficient number, since it is larger than the sum of its proper divisors (5256811).

27608021 is a wasteful number, since it uses less digits than its factorization.

27608021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13160 (or 13153 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 27608021 is about 5254.3335447990. Note that the first 3 decimals coincide. The cubic root of 27608021 is about 302.2352340300.

Adding to 27608021 its reverse (12080672), we get a palindrome (39688693).

The spelling of 27608021 in words is "twenty-seven million, six hundred eight thousand, twenty-one".