89812218 has 8 divisors (see below), whose sum is σ = 179624448. Its totient is φ = 29937404.

The previous prime is 89812213. The next prime is 89812249. The reversal of 89812218 is 81221898.

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

89812218 is an admirable number.

It is a super-3 number, since 3×89812218³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (89812213) 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, 7484346 + ... + 7484357.

It is an arithmetic number, because the mean of its divisors is an integer number (22453056).

Almost surely, 2^89812218 is an apocalyptic number.

89812218 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

89812218 is a wasteful number, since it uses less digits than its factorization.

89812218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14968708.

The product of its digits is 18432, while the sum is 39.

The square root of 89812218 is about 9476.9308322895. The cubic root of 89812218 is about 447.8285809156.

The spelling of 89812218 in words is "eighty-nine million, eight hundred twelve thousand, two hundred eighteen".