27102681 has 20 divisors (see below), whose sum is σ = 41479284. Its totient is φ = 17625600.

The previous prime is 27102679. The next prime is 27102697. The reversal of 27102681 is 18620172.

It can be written as a sum of positive squares in 2 ways, for example, as 4862025 + 22240656 = 2205^2 + 4716^2 .

It is not a de Polignac number, because 27102681 - 2¹ = 27102679 is a prime.

It is a super-2 number, since 2×27102681² = 1469110634775522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27102601) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 760 + ... + 7401.

Almost surely, 2^27102681 is an apocalyptic number.

It is an amenable number.

27102681 is a deficient number, since it is larger than the sum of its proper divisors (14376603).

27102681 is an equidigital number, since it uses as much as digits as its factorization.

27102681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8214 (or 8205 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 27102681 is about 5206.0235304885. The cubic root of 27102681 is about 300.3798189223.

The spelling of 27102681 in words is "twenty-seven million, one hundred two thousand, six hundred eighty-one".