27018921 has 8 divisors (see below), whose sum is σ = 36863200. Its totient is φ = 17593632.

The previous prime is 27018919. The next prime is 27018941. The reversal of 27018921 is 12981072.

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

It is not a de Polignac number, because 27018921 - 2¹ = 27018919 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27018911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104596 + ... + 104853.

It is an arithmetic number, because the mean of its divisors is an integer number (4607900).

Almost surely, 2^27018921 is an apocalyptic number.

It is an amenable number.

27018921 is a deficient number, since it is larger than the sum of its proper divisors (9844279).

27018921 is a wasteful number, since it uses less digits than its factorization.

27018921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209495.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 27018921 is about 5197.9727779203. The cubic root of 27018921 is about 300.0700614145.

Adding to 27018921 its reverse (12981072), we get a palindrome (39999993).

It can be divided in two parts, 270 and 18921, that added together give a palindrome (19191).

The spelling of 27018921 in words is "twenty-seven million, eighteen thousand, nine hundred twenty-one".