13224123240 has 128 divisors (see below), whose sum is σ = 41534760960. Its totient is φ = 3361906944.

The previous prime is 13224123233. The next prime is 13224123257. The reversal of 13224123240 is 4232142231.

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 13224123240.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 839517 + ... + 855123.

It is an arithmetic number, because the mean of its divisors is an integer number (324490320).

Almost surely, 2^13224123240 is an apocalyptic number.

13224123240 is a gapful number since it is divisible by the number (10) 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 13224123240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20767380480).

13224123240 is an abundant number, since it is smaller than the sum of its proper divisors (28310637720).

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

13224123240 is a wasteful number, since it uses less digits than its factorization.

13224123240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15951 (or 15947 counting only the distinct ones).

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

Adding to 13224123240 its reverse (4232142231), we get a palindrome (17456265471).

The spelling of 13224123240 in words is "thirteen billion, two hundred twenty-four million, one hundred twenty-three thousand, two hundred forty".