22246818 has 24 divisors (see below), whose sum is σ = 48907824. Its totient is φ = 6741240.

The previous prime is 22246817. The next prime is 22246831. The reversal of 22246818 is 81864222.

It is a happy number.

It is a super-2 number, since 2×22246818² = 989841822250248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (22246817) 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 11 ways as a sum of consecutive naturals, for example, 14596 + ... + 16047.

It is an arithmetic number, because the mean of its divisors is an integer number (2037826).

Almost surely, 2^22246818 is an apocalyptic number.

22246818 is an abundant number, since it is smaller than the sum of its proper divisors (26661006).

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

22246818 is a wasteful number, since it uses less digits than its factorization.

22246818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30670 (or 30659 counting only the distinct ones).

The product of its digits is 12288, while the sum is 33.

The square root of 22246818 is about 4716.6532626429. The cubic root of 22246818 is about 281.2479079351.

The spelling of 22246818 in words is "twenty-two million, two hundred forty-six thousand, eight hundred eighteen".