27388901 has 4 divisors (see below), whose sum is σ = 27406092. Its totient is φ = 27371712.

The previous prime is 27388871. The next prime is 27388909. The reversal of 27388901 is 10988372.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19272100 + 8116801 = 4390^2 + 2849^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27388901 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 (27388909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5930 + ... + 9483.

It is an arithmetic number, because the mean of its divisors is an integer number (6851523).

Almost surely, 2^27388901 is an apocalyptic number.

It is an amenable number.

27388901 is a deficient number, since it is larger than the sum of its proper divisors (17191).

27388901 is a wasteful number, since it uses less digits than its factorization.

27388901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17190.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 27388901 is about 5233.4406464581. The cubic root of 27388901 is about 301.4335132958.

The spelling of 27388901 in words is "twenty-seven million, three hundred eighty-eight thousand, nine hundred one".