1224540044 has 96 divisors (see below), whose sum is σ = 2824281600. Its totient is φ = 451008000.

The previous prime is 1224540019. The next prime is 1224540061. The reversal of 1224540044 is 4400454221.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 1224539995 and 1224540022.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 406544 + ... + 409544.

It is an arithmetic number, because the mean of its divisors is an integer number (29419600).

Almost surely, 2^1224540044 is an apocalyptic number.

1224540044 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 1224540044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1412140800).

1224540044 is an abundant number, since it is smaller than the sum of its proper divisors (1599741556).

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

1224540044 is a wasteful number, since it uses less digits than its factorization.

1224540044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3103 (or 3101 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 1224540044 is about 34993.4285830926. The cubic root of 1224540044 is about 1069.8535462057.

Adding to 1224540044 its reverse (4400454221), we get a palindrome (5624994265).

The spelling of 1224540044 in words is "one billion, two hundred twenty-four million, five hundred forty thousand, forty-four".