22066944 has 72 divisors (see below), whose sum is σ = 59848320. Its totient is φ = 7216128.

The previous prime is 22066943. The next prime is 22066949. The reversal of 22066944 is 44966022.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22066943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45069 + ... + 45555.

Almost surely, 2^22066944 is an apocalyptic number.

22066944 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 22066944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29924160).

22066944 is an abundant number, since it is smaller than the sum of its proper divisors (37781376).

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

22066944 is an equidigital number, since it uses as much as digits as its factorization.

22066944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565 (or 551 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 22066944 is about 4697.5465937019. The cubic root of 22066944 is about 280.4878569735.

The spelling of 22066944 in words is "twenty-two million, sixty-six thousand, nine hundred forty-four".