12440403024 has 480 divisors, whose sum is σ = 41037373440. Its totient is φ = 3228825600.

The previous prime is 12440403011. The next prime is 12440403029. The reversal of 12440403024 is 42030404421.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 12440402985 and 12440403003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12440403029) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 157473417 + ... + 157473495.

It is an arithmetic number, because the mean of its divisors is an integer number (85494528).

Almost surely, 2^12440403024 is an apocalyptic number.

12440403024 is a gapful number since it is divisible by the number (14) 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 12440403024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20518686720).

12440403024 is an abundant number, since it is smaller than the sum of its proper divisors (28596970416).

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

12440403024 is a wasteful number, since it uses less digits than its factorization.

12440403024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 12440403024 its reverse (42030404421), we get a palindrome (54470807445).

The spelling of 12440403024 in words is "twelve billion, four hundred forty million, four hundred three thousand, twenty-four".