23112227440 has 120 divisors (see below), whose sum is σ = 56844665280. Its totient is φ = 8734989312.

The previous prime is 23112227389. The next prime is 23112227443. The reversal of 23112227440 is 4472221132.

It is a junction number, because it is equal to n+sod(n) for n = 23112227399 and 23112227408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23112227443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3158506 + ... + 3165814.

It is an arithmetic number, because the mean of its divisors is an integer number (473705544).

Almost surely, 2^23112227440 is an apocalyptic number.

23112227440 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 23112227440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28422332640).

23112227440 is an abundant number, since it is smaller than the sum of its proper divisors (33732437840).

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

23112227440 is a wasteful number, since it uses less digits than its factorization.

23112227440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7427 (or 7392 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

Adding to 23112227440 its reverse (4472221132), we get a palindrome (27584448572).

The spelling of 23112227440 in words is "twenty-three billion, one hundred twelve million, two hundred twenty-seven thousand, four hundred forty".