22423311240 has 128 divisors (see below), whose sum is σ = 73431429120. Its totient is φ = 5432544000.

The previous prime is 22423311227. The next prime is 22423311277. The reversal of 22423311240 is 4211332422.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 22423311240.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2570967 + ... + 2579673.

It is an arithmetic number, because the mean of its divisors is an integer number (573683040).

Almost surely, 2^22423311240 is an apocalyptic number.

22423311240 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 22423311240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36715714560).

22423311240 is an abundant number, since it is smaller than the sum of its proper divisors (51008117880).

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

22423311240 is a wasteful number, since it uses less digits than its factorization.

22423311240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10683 (or 10679 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 22423311240 its reverse (4211332422), we get a palindrome (26634643662).

The spelling of 22423311240 in words is "twenty-two billion, four hundred twenty-three million, three hundred eleven thousand, two hundred forty".