22244022 has 48 divisors (see below), whose sum is σ = 51146160. Its totient is φ = 6967296.

The previous prime is 22244011. The next prime is 22244069. The reversal of 22244022 is 22044222.

22244022 is a `hidden beast` number, since 222 + 440 + 2 + 2 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 22243986 and 22244004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65838 + ... + 66174.

It is an arithmetic number, because the mean of its divisors is an integer number (1065545).

Almost surely, 2^22244022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22244022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25573080).

22244022 is an abundant number, since it is smaller than the sum of its proper divisors (28902138).

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

22244022 is a wasteful number, since it uses less digits than its factorization.

22244022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557 (or 554 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 22244022 is about 4716.3568567274. The cubic root of 22244022 is about 281.2361249451.

Adding to 22244022 its reverse (22044222), we get a palindrome (44288244).

It can be divided in two parts, 222 and 44022, that added together give a palindrome (44244).

The spelling of 22244022 in words is "twenty-two million, two hundred forty-four thousand, twenty-two".