22236816 has 120 divisors (see below), whose sum is σ = 70045120. Its totient is φ = 5953536.

The previous prime is 22236787. The next prime is 22236817. The reversal of 22236816 is 61863222.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (22236817) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 96990 + ... + 97218.

Almost surely, 2^22236816 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 22236816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35022560).

22236816 is an abundant number, since it is smaller than the sum of its proper divisors (47808304).

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

22236816 is a wasteful number, since it uses less digits than its factorization.

22236816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281 (or 258 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 22236816 is about 4715.5928577433. The cubic root of 22236816 is about 281.2057526441.

The spelling of 22236816 in words is "twenty-two million, two hundred thirty-six thousand, eight hundred sixteen".