22020744 has 48 divisors (see below), whose sum is σ = 57067920. Its totient is φ = 7080640.

The previous prime is 22020709. The next prime is 22020749. The reversal of 22020744 is 44702022.

It is a self number, because there is not a number n which added to its sum of digits gives 22020744.

It is not an unprimeable number, because it can be changed into a prime (22020749) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19639 + ... + 20729.

It is an arithmetic number, because the mean of its divisors is an integer number (1188915).

Almost surely, 2^22020744 is an apocalyptic number.

22020744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22020744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28533960).

22020744 is an abundant number, since it is smaller than the sum of its proper divisors (35047176).

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

22020744 is a wasteful number, since it uses less digits than its factorization.

22020744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158 (or 1125 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 22020744 is about 4692.6265566312. The cubic root of 22020744 is about 280.2919743450.

Adding to 22020744 its reverse (44702022), we get a palindrome (66722766).

The spelling of 22020744 in words is "twenty-two million, twenty thousand, seven hundred forty-four".