22023216 has 30 divisors (see below), whose sum is σ = 61634820. Its totient is φ = 7341024.

The previous prime is 22023203. The next prime is 22023217. The reversal of 22023216 is 61232022.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22023217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 76326 + ... + 76613.

It is an arithmetic number, because the mean of its divisors is an integer number (2054494).

Almost surely, 2^22023216 is an apocalyptic number.

It is an amenable number.

22023216 is an abundant number, since it is smaller than the sum of its proper divisors (39611604).

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

22023216 is a wasteful number, since it uses less digits than its factorization.

22023216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152953 (or 152944 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 22023216 is about 4692.8899411770. The cubic root of 22023216 is about 280.3024622715.

Adding to 22023216 its reverse (61232022), we get a palindrome (83255238).

It can be divided in two parts, 220 and 23216, that added together give a triangular number (23436 = T₂₁₆).

The spelling of 22023216 in words is "twenty-two million, twenty-three thousand, two hundred sixteen".