27248281 has 4 divisors (see below), whose sum is σ = 27260964. Its totient is φ = 27235600.

The previous prime is 27248239. The next prime is 27248293. The reversal of 27248281 is 18284272.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2298256 + 24950025 = 1516^2 + 4995^2 .

It is a cyclic number.

It is not a de Polignac number, because 27248281 - 2²¹ = 25151129 is a prime.

It is a super-2 number, since 2×27248281² = 1484937634909922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27248681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2230 + ... + 7711.

It is an arithmetic number, because the mean of its divisors is an integer number (6815241).

Almost surely, 2^27248281 is an apocalyptic number.

It is an amenable number.

27248281 is a deficient number, since it is larger than the sum of its proper divisors (12683).

27248281 is an equidigital number, since it uses as much as digits as its factorization.

27248281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12682.

The product of its digits is 14336, while the sum is 34.

The square root of 27248281 is about 5219.9886015201. The cubic root of 27248281 is about 300.9167549402.

The spelling of 27248281 in words is "twenty-seven million, two hundred forty-eight thousand, two hundred eighty-one".