1244880000 has 960 divisors, whose sum is σ = 5799393600. Its totient is φ = 248832000.

The previous prime is 1244879983. The next prime is 1244880011. The reversal of 1244880000 is 884421.

It is a tau number, because it is divible by the number of its divisors (960).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 65519991 + ... + 65520009.

It is an arithmetic number, because the mean of its divisors is an integer number (6041035).

Almost surely, 2^1244880000 is an apocalyptic number.

1244880000 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 1244880000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2899696800).

1244880000 is an abundant number, since it is smaller than the sum of its proper divisors (4554513600).

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

1244880000 is a wasteful number, since it uses less digits than its factorization.

1244880000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 49 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 1244880000 is about 35282.8570271740. The cubic root of 1244880000 is about 1075.7445716069.

The spelling of 1244880000 in words is "one billion, two hundred forty-four million, eight hundred eighty thousand".