27381109 has 16 divisors (see below), whose sum is σ = 34375680. Its totient is φ = 21265200.

The previous prime is 27381089. The next prime is 27381113. The reversal of 27381109 is 90118372.

It is a cyclic number.

It is not a de Polignac number, because 27381109 - 2⁹ = 27380597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27381149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1417 + ... + 7534.

It is an arithmetic number, because the mean of its divisors is an integer number (2148480).

Almost surely, 2^27381109 is an apocalyptic number.

It is an amenable number.

27381109 is a deficient number, since it is larger than the sum of its proper divisors (6994571).

27381109 is a wasteful number, since it uses less digits than its factorization.

27381109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9000.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 27381109 is about 5232.6961501696. The cubic root of 27381109 is about 301.4049251618.

The spelling of 27381109 in words is "twenty-seven million, three hundred eighty-one thousand, one hundred nine".