27133218 has 80 divisors (see below), whose sum is σ = 70671744. Its totient is φ = 7620480.

The previous prime is 27133213. The next prime is 27133231. The reversal of 27133218 is 81233172.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 27133191 and 27133200.

It is not an unprimeable number, because it can be changed into a prime (27133213) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 80346 + ... + 80682.

Almost surely, 2^27133218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27133218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35335872).

27133218 is an abundant number, since it is smaller than the sum of its proper divisors (43538526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27133218 is a wasteful number, since it uses less digits than its factorization.

27133218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 420 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 27133218 is about 5208.9555574990. The cubic root of 27133218 is about 300.4925907385.

It can be divided in two parts, 271 and 33218, that added together give a square (33489 = 183²).

The spelling of 27133218 in words is "twenty-seven million, one hundred thirty-three thousand, two hundred eighteen".