1044255440 has 80 divisors (see below), whose sum is σ = 2519911632. Its totient is φ = 402112512.

The previous prime is 1044255383. The next prime is 1044255451. The reversal of 1044255440 is 445524401.

1044255440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 33269824 + 1010985616 = 5768^2 + 31796^2 .

It is a tau number, because it is divible by the number of its divisors (80).

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, 285302 + ... + 288938.

Almost surely, 2^1044255440 is an apocalyptic number.

1044255440 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 1044255440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1259955816).

1044255440 is an abundant number, since it is smaller than the sum of its proper divisors (1475656192).

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

1044255440 is a wasteful number, since it uses less digits than its factorization.

1044255440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3784 (or 3778 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

The square root of 1044255440 is about 32314.9414358126. The cubic root of 1044255440 is about 1014.5393948180.

Adding to 1044255440 its reverse (445524401), we get a palindrome (1489779841).

The spelling of 1044255440 in words is "one billion, forty-four million, two hundred fifty-five thousand, four hundred forty".