27915133 has 6 divisors (see below), whose sum is σ = 28523966. Its totient is φ = 27319032.

The previous prime is 27915119. The next prime is 27915143. The reversal of 27915133 is 33151972.

It can be written as a sum of positive squares in only one way, i.e., 18292729 + 9622404 = 4277^2 + 3102^2 .

It is a de Polignac number, because none of the positive numbers 2^k-27915133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27915095 and 27915104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27915103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4110 + ... + 8527.

Almost surely, 2^27915133 is an apocalyptic number.

It is an amenable number.

27915133 is a deficient number, since it is larger than the sum of its proper divisors (608833).

27915133 is an equidigital number, since it uses as much as digits as its factorization.

27915133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12731 (or 12684 counting only the distinct ones).

The product of its digits is 5670, while the sum is 31.

The square root of 27915133 is about 5283.4773587099. The cubic root of 27915133 is about 303.3517936141.

The spelling of 27915133 in words is "twenty-seven million, nine hundred fifteen thousand, one hundred thirty-three".