1244040224 has 72 divisors (see below), whose sum is σ = 2915489808. Its totient is φ = 520732800.

The previous prime is 1244040209. The next prime is 1244040247. The reversal of 1244040224 is 4220404421.

It is a self number, because there is not a number n which added to its sum of digits gives 1244040224.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58199 + ... + 76649.

It is an arithmetic number, because the mean of its divisors is an integer number (40492914).

Almost surely, 2^1244040224 is an apocalyptic number.

1244040224 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 1244040224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1457744904).

1244040224 is an abundant number, since it is smaller than the sum of its proper divisors (1671449584).

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

1244040224 is a wasteful number, since it uses less digits than its factorization.

1244040224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18518 (or 18503 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 1244040224 is about 35270.9543959332. The cubic root of 1244040224 is about 1075.5026238727.

Adding to 1244040224 its reverse (4220404421), we get a palindrome (5464444645).

The spelling of 1244040224 in words is "one billion, two hundred forty-four million, forty thousand, two hundred twenty-four".