16224222 has 64 divisors (see below), whose sum is σ = 40587264. Its totient is φ = 4216320.

The previous prime is 16224211. The next prime is 16224227. The reversal of 16224222 is 22242261.

It is a super-3 number, since 3×16224222³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16224227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21768 + ... + 22500.

It is an arithmetic number, because the mean of its divisors is an integer number (634176).

Almost surely, 2^16224222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16224222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20293632).

16224222 is an abundant number, since it is smaller than the sum of its proper divisors (24363042).

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

16224222 is a wasteful number, since it uses less digits than its factorization.

16224222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793.

The product of its digits is 768, while the sum is 21.

The square root of 16224222 is about 4027.9302377276. The cubic root of 16224222 is about 253.1558455933.

Adding to 16224222 its reverse (22242261), we get a palindrome (38466483).

The spelling of 16224222 in words is "sixteen million, two hundred twenty-four thousand, two hundred twenty-two".