1244224320 has 112 divisors (see below), whose sum is σ = 4015362048. Its totient is φ = 326338560.

The previous prime is 1244224301. The next prime is 1244224357. The reversal of 1244224320 is 234224421.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47937 + ... + 69183.

Almost surely, 2^1244224320 is an apocalyptic number.

1244224320 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 1244224320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2007681024).

1244224320 is an abundant number, since it is smaller than the sum of its proper divisors (2771137728).

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

1244224320 is a wasteful number, since it uses less digits than its factorization.

1244224320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21328 (or 21318 counting only the distinct ones).

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

The square root of 1244224320 is about 35273.5640388096. The cubic root of 1244224320 is about 1075.5556730592. Note that the first 3 decimals are identical.

Adding to 1244224320 its reverse (234224421), we get a palindrome (1478448741).

The spelling of 1244224320 in words is "one billion, two hundred forty-four million, two hundred twenty-four thousand, three hundred twenty".