22424000 has 56 divisors (see below), whose sum is σ = 55552848. Its totient is φ = 8966400.

The previous prime is 22423997. The next prime is 22424041. The reversal of 22424000 is 42422.

It is a happy number.

It is a congruent number.

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, 6599 + ... + 9401.

Almost surely, 2^22424000 is an apocalyptic number.

22424000 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 22424000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27776424).

22424000 is an abundant number, since it is smaller than the sum of its proper divisors (33128848).

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

22424000 is an equidigital number, since it uses as much as digits as its factorization.

22424000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2830 (or 2810 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 22424000 is about 4735.3986104656. The cubic root of 22424000 is about 281.9925890445.

Adding to 22424000 its reverse (42422), we get a palindrome (22466422).

The spelling of 22424000 in words is "twenty-two million, four hundred twenty-four thousand".