22432272 has 60 divisors (see below), whose sum is σ = 59601840. Its totient is φ = 7268096.

The previous prime is 22432261. The next prime is 22432273. The reversal of 22432272 is 27223422.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (22432273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 252004 + ... + 252092.

It is an arithmetic number, because the mean of its divisors is an integer number (993364).

Almost surely, 2^22432272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22432272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29800920).

22432272 is an abundant number, since it is smaller than the sum of its proper divisors (37169568).

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

22432272 is an equidigital number, since it uses as much as digits as its factorization.

22432272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248 (or 153 counting only the distinct ones).

The product of its digits is 2688, while the sum is 24.

The square root of 22432272 is about 4736.2719516514. The cubic root of 22432272 is about 282.0272595750.

Adding to 22432272 its reverse (27223422), we get a palindrome (49655694).

The spelling of 22432272 in words is "twenty-two million, four hundred thirty-two thousand, two hundred seventy-two".