22432000 has 72 divisors (see below), whose sum is σ = 55960632. Its totient is φ = 8960000.

The previous prime is 22431973. The next prime is 22432001. The reversal of 22432000 is 23422.

It can be written as a sum of positive squares in 4 ways, for example, as 2304 + 22429696 = 48^2 + 4736^2 .

It is not an unprimeable number, because it can be changed into a prime (22432001) 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, 31650 + ... + 32350.

It is an arithmetic number, because the mean of its divisors is an integer number (777231).

Almost surely, 2^22432000 is an apocalyptic number.

22432000 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 22432000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27980316).

22432000 is an abundant number, since it is smaller than the sum of its proper divisors (33528632).

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

22432000 is an frugal number, since it uses more digits than its factorization.

22432000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732 (or 708 counting only the distinct ones).

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

The square root of 22432000 is about 4736.2432369970. The cubic root of 22432000 is about 282.0261196738.

Adding to 22432000 its reverse (23422), we get a palindrome (22455422).

The spelling of 22432000 in words is "twenty-two million, four hundred thirty-two thousand".