22023040 has 64 divisors (see below), whose sum is σ = 56720160. Its totient is φ = 8128512.

The previous prime is 22023031. The next prime is 22023047. The reversal of 22023040 is 4032022.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 22023040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22023047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6997 + ... + 9643.

Almost surely, 2^22023040 is an apocalyptic number.

22023040 is a gapful number since it is divisible by the number (20) 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 22023040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28360080).

22023040 is an abundant number, since it is smaller than the sum of its proper divisors (34697120).

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

22023040 is a wasteful number, since it uses less digits than its factorization.

22023040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2679 (or 2667 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 22023040 is about 4692.8711893680. The cubic root of 22023040 is about 280.3017155842.

Adding to 22023040 its reverse (4032022), we get a palindrome (26055062).

The spelling of 22023040 in words is "twenty-two million, twenty-three thousand, forty".