22000044 has 24 divisors (see below), whose sum is σ = 56000448. Its totient is φ = 6666640.

The previous prime is 22000037. The next prime is 22000061. The reversal of 22000044 is 44000022.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 21999993 and 22000029.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83202 + ... + 83465.

It is an arithmetic number, because the mean of its divisors is an integer number (2333352).

Almost surely, 2^22000044 is an apocalyptic number.

It is an amenable number.

22000044 is an abundant number, since it is smaller than the sum of its proper divisors (34000404).

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

22000044 is a wasteful number, since it uses less digits than its factorization.

22000044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166685 (or 166683 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 22000044 is about 4690.4204502368. The cubic root of 22000044 is about 280.2041198680.

Adding to 22000044 its reverse (44000022), we get a palindrome (66000066).

The spelling of 22000044 in words is "twenty-two million, forty-four", and thus it is an aban number.