22016220 has 48 divisors (see below), whose sum is σ = 63776160. Its totient is φ = 5668096.

The previous prime is 22016219. The next prime is 22016261. The reversal of 22016220 is 2261022.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22016220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4587 + ... + 8066.

It is an arithmetic number, because the mean of its divisors is an integer number (1328670).

Almost surely, 2^22016220 is an apocalyptic number.

22016220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22016220 is an abundant number, since it is smaller than the sum of its proper divisors (41759940).

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

22016220 is a wasteful number, since it uses less digits than its factorization.

22016220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12694 (or 12692 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 22016220 is about 4692.1444990537. The cubic root of 22016220 is about 280.2727783884.

Adding to 22016220 its reverse (2261022), we get a palindrome (24277242).

The spelling of 22016220 in words is "twenty-two million, sixteen thousand, two hundred twenty".