22443100 has 72 divisors (see below), whose sum is σ = 51559200. Its totient is φ = 8467200.

The previous prime is 22443061. The next prime is 22443107. The reversal of 22443100 is 134422.

It is a super-2 number, since 2×22443100² = 1007385475220000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22443107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 205846 + ... + 205954.

It is an arithmetic number, because the mean of its divisors is an integer number (716100).

Almost surely, 2^22443100 is an apocalyptic number.

22443100 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 22443100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25779600).

22443100 is an abundant number, since it is smaller than the sum of its proper divisors (29116100).

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

22443100 is a wasteful number, since it uses less digits than its factorization.

22443100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 22443100 is about 4737.4149068875. The cubic root of 22443100 is about 282.0726302200.

Adding to 22443100 its reverse (134422), we get a palindrome (22577522).

The spelling of 22443100 in words is "twenty-two million, four hundred forty-three thousand, one hundred".