27220018 has 8 divisors (see below), whose sum is σ = 46662912. Its totient is φ = 11665716.

The previous prime is 27220013. The next prime is 27220019. The reversal of 27220018 is 81002272.

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

It is a super-3 number, since 3×27220018³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (27220013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 972130 + ... + 972157.

It is an arithmetic number, because the mean of its divisors is an integer number (5832864).

Almost surely, 2^27220018 is an apocalyptic number.

27220018 is a deficient number, since it is larger than the sum of its proper divisors (19442894).

27220018 is a wasteful number, since it uses less digits than its factorization.

27220018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1944296.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 27220018 is about 5217.2807093351. The cubic root of 27220018 is about 300.8126780084.

The spelling of 27220018 in words is "twenty-seven million, two hundred twenty thousand, eighteen".