1044221560 has 128 divisors (see below), whose sum is σ = 2519424000. Its totient is φ = 388831744.

The previous prime is 1044221539. The next prime is 1044221569. The reversal of 1044221560 is 651224401.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1044221569) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5833551 + ... + 5833729.

It is an arithmetic number, because the mean of its divisors is an integer number (19683000).

Almost surely, 2^1044221560 is an apocalyptic number.

1044221560 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 1044221560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1259712000).

1044221560 is an abundant number, since it is smaller than the sum of its proper divisors (1475202440).

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

1044221560 is a wasteful number, since it uses less digits than its factorization.

1044221560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373 (or 369 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1044221560 is about 32314.4172158496. The cubic root of 1044221560 is about 1014.5284227368.

Adding to 1044221560 its reverse (651224401), we get a palindrome (1695445961).

The spelling of 1044221560 in words is "one billion, forty-four million, two hundred twenty-one thousand, five hundred sixty".