22433240 has 64 divisors (see below), whose sum is σ = 53071200. Its totient is φ = 8522752.

The previous prime is 22433239. The next prime is 22433249. The reversal of 22433240 is 4233422.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22433249) 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 15 ways as a sum of consecutive naturals, for example, 96164 + ... + 96396.

Almost surely, 2^22433240 is an apocalyptic number.

22433240 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 22433240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26535600).

22433240 is an abundant number, since it is smaller than the sum of its proper divisors (30637960).

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

22433240 is a wasteful number, since it uses less digits than its factorization.

22433240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 22433240 is about 4736.3741406270. The cubic root of 22433240 is about 282.0313162077.

Adding to 22433240 its reverse (4233422), we get a palindrome (26666662).

The spelling of 22433240 in words is "twenty-two million, four hundred thirty-three thousand, two hundred forty".