22022616 has 128 divisors (see below), whose sum is σ = 72783360. Its totient is φ = 5376000.

The previous prime is 22022603. The next prime is 22022641. The reversal of 22022616 is 61622022.

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

It is a junction number, because it is equal to n+sod(n) for n = 22022592 and 22022601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31066 + ... + 31766.

It is an arithmetic number, because the mean of its divisors is an integer number (568620).

Almost surely, 2^22022616 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 22022616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36391680).

22022616 is an abundant number, since it is smaller than the sum of its proper divisors (50760744).

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

22022616 is a wasteful number, since it uses less digits than its factorization.

22022616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745 (or 741 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 22022616 is about 4692.8260142477. The cubic root of 22022616 is about 280.2999167304.

Adding to 22022616 its reverse (61622022), we get a palindrome (83644638).

The spelling of 22022616 in words is "twenty-two million, twenty-two thousand, six hundred sixteen".