270189 has 8 divisors (see below), whose sum is σ = 400320. Its totient is φ = 180108.

The previous prime is 270167. The next prime is 270191. The reversal of 270189 is 981072.

It is not a de Polignac number, because 270189 - 2⁵ = 270157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 10007 = 270189 / (2 + 7 + 0 + 1 + 8 + 9).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (270689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4977 + ... + 5030.

It is an arithmetic number, because the mean of its divisors is an integer number (50040).

2²⁷⁰¹⁸⁹ is an apocalyptic number.

It is an amenable number.

270189 is a deficient number, since it is larger than the sum of its proper divisors (130131).

270189 is a wasteful number, since it uses less digits than its factorization.

270189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10016 (or 10010 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 270189 is about 519.7970757902. The cubic root of 270189 is about 64.6481182262.

The spelling of 270189 in words is "two hundred seventy thousand, one hundred eighty-nine".