27128133 has 6 divisors (see below), whose sum is σ = 39185094. Its totient is φ = 18085416.

The previous prime is 27128117. The next prime is 27128161. The reversal of 27128133 is 33182172.

It can be written as a sum of positive squares in only one way, i.e., 18378369 + 8749764 = 4287^2 + 2958^2 .

It is not a de Polignac number, because 27128133 - 2⁴ = 27128117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27128097 and 27128106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27128033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1507110 + ... + 1507127.

It is an arithmetic number, because the mean of its divisors is an integer number (6530849).

Almost surely, 2^27128133 is an apocalyptic number.

It is an amenable number.

27128133 is a deficient number, since it is larger than the sum of its proper divisors (12056961).

27128133 is a wasteful number, since it uses less digits than its factorization.

27128133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3014243 (or 3014240 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 27128133 is about 5208.4674329403. The cubic root of 27128133 is about 300.4738179279.

It can be divided in two parts, 27128 and 133, that added together give a triangular number (27261 = T₂₃₃).

The spelling of 27128133 in words is "twenty-seven million, one hundred twenty-eight thousand, one hundred thirty-three".