1244801040 has 160 divisors (see below), whose sum is σ = 4476380160. Its totient is φ = 280253952.

The previous prime is 1244801011. The next prime is 1244801059. The reversal of 1244801040 is 401084421.

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 1244801040.

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, 107031 + ... + 118089.

It is an arithmetic number, because the mean of its divisors is an integer number (27977376).

Almost surely, 2^1244801040 is an apocalyptic number.

1244801040 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 1244801040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2238190080).

1244801040 is an abundant number, since it is smaller than the sum of its proper divisors (3231579120).

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

1244801040 is a wasteful number, since it uses less digits than its factorization.

1244801040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11149 (or 11143 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 1244801040 is about 35281.7380524259. The cubic root of 1244801040 is about 1075.7218270887.

Adding to 1244801040 its reverse (401084421), we get a palindrome (1645885461).

The spelling of 1244801040 in words is "one billion, two hundred forty-four million, eight hundred one thousand, forty".