22719240 has 96 divisors (see below), whose sum is σ = 74430720. Its totient is φ = 6009984.

The previous prime is 22719227. The next prime is 22719241. The reversal of 22719240 is 4291722.

It is not an unprimeable number, because it can be changed into a prime (22719241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80139 + ... + 80421.

It is an arithmetic number, because the mean of its divisors is an integer number (775320).

Almost surely, 2^22719240 is an apocalyptic number.

22719240 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 22719240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37215360).

22719240 is an abundant number, since it is smaller than the sum of its proper divisors (51711480).

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

22719240 is a wasteful number, since it uses less digits than its factorization.

22719240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 22719240 is about 4766.4703922295. The cubic root of 22719240 is about 283.2247919501.

It can be divided in two parts, 2271 and 9240, that added together give a palindrome (11511).

The spelling of 22719240 in words is "twenty-two million, seven hundred nineteen thousand, two hundred forty".