22216662 has 72 divisors (see below), whose sum is σ = 54918864. Its totient is φ = 6451488.

The previous prime is 22216661. The next prime is 22216673. The reversal of 22216662 is 26661222.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22216661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 84343 + ... + 84605.

It is an arithmetic number, because the mean of its divisors is an integer number (762762).

Almost surely, 2^22216662 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22216662, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27459432).

22216662 is an abundant number, since it is smaller than the sum of its proper divisors (32702202).

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

22216662 is a wasteful number, since it uses less digits than its factorization.

22216662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322 (or 300 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 22216662 is about 4713.4554203896. The cubic root of 22216662 is about 281.1207714461.

Adding to 22216662 its reverse (26661222), we get a palindrome (48877884).

The spelling of 22216662 in words is "twenty-two million, two hundred sixteen thousand, six hundred sixty-two".