27288145 has 8 divisors (see below), whose sum is σ = 34672104. Its totient is φ = 20546304.

The previous prime is 27288139. The next prime is 27288181. The reversal of 27288145 is 54188272.

It can be written as a sum of positive squares in 4 ways, for example, as 1308736 + 25979409 = 1144^2 + 5097^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27288145 - 2⁵ = 27288113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160434 + ... + 160603.

It is an arithmetic number, because the mean of its divisors is an integer number (4334013).

Almost surely, 2^27288145 is an apocalyptic number.

It is an amenable number.

27288145 is a deficient number, since it is larger than the sum of its proper divisors (7383959).

27288145 is a wasteful number, since it uses less digits than its factorization.

27288145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321059.

The product of its digits is 35840, while the sum is 37.

The square root of 27288145 is about 5223.8056051120. The cubic root of 27288145 is about 301.0634296409.

The spelling of 27288145 in words is "twenty-seven million, two hundred eighty-eight thousand, one hundred forty-five".