27218436 has 48 divisors (see below), whose sum is σ = 73041024. Its totient is φ = 7727616.

The previous prime is 27218419. The next prime is 27218447. The reversal of 27218436 is 63481272.

It is a junction number, because it is equal to n+sod(n) for n = 27218397 and 27218406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13596 + ... + 15468.

It is an arithmetic number, because the mean of its divisors is an integer number (1521688).

Almost surely, 2^27218436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27218436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36520512).

27218436 is an abundant number, since it is smaller than the sum of its proper divisors (45822588).

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

27218436 is a wasteful number, since it uses less digits than its factorization.

27218436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2060 (or 2058 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 27218436 is about 5217.1290955850. The cubic root of 27218436 is about 300.8068502524.

The spelling of 27218436 in words is "twenty-seven million, two hundred eighteen thousand, four hundred thirty-six".