27242218 has 4 divisors (see below), whose sum is σ = 40863330. Its totient is φ = 13621108.

The previous prime is 27242197. The next prime is 27242231. The reversal of 27242218 is 81224272.

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

It can be written as a sum of positive squares in only one way, i.e., 20097289 + 7144929 = 4483^2 + 2673^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6810553 + ... + 6810556.

Almost surely, 2^27242218 is an apocalyptic number.

27242218 is a deficient number, since it is larger than the sum of its proper divisors (13621112).

27242218 is a wasteful number, since it uses less digits than its factorization.

27242218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13621111.

The product of its digits is 3584, while the sum is 28.

The square root of 27242218 is about 5219.4078208165. The cubic root of 27242218 is about 300.8944343442.

The spelling of 27242218 in words is "twenty-seven million, two hundred forty-two thousand, two hundred eighteen".