1089218 has 8 divisors (see below), whose sum is σ = 1759548. Its totient is φ = 502704.

The previous prime is 1089217. The next prime is 1089223. The reversal of 1089218 is 8129801.

It can be written as a sum of positive squares in 2 ways, for example, as 1087849 + 1369 = 1043^2 + 37^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1089217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20921 + ... + 20972.

2^1089218 is an apocalyptic number.

1089218 is a deficient number, since it is larger than the sum of its proper divisors (670330).

1089218 is a wasteful number, since it uses less digits than its factorization.

1089218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41908.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 1089218 is about 1043.6560736181. The cubic root of 1089218 is about 102.8896294723.

The spelling of 1089218 in words is "one million, eighty-nine thousand, two hundred eighteen".