1044005540 has 96 divisors (see below), whose sum is σ = 2370816000. Its totient is φ = 384988032.

The previous prime is 1044005537. The next prime is 1044005561. The reversal of 1044005540 is 455004401.

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, 2491451 + ... + 2491869.

It is an arithmetic number, because the mean of its divisors is an integer number (24696000).

Almost surely, 2^1044005540 is an apocalyptic number.

1044005540 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 1044005540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1185408000).

1044005540 is an abundant number, since it is smaller than the sum of its proper divisors (1326810460).

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

1044005540 is a wasteful number, since it uses less digits than its factorization.

1044005540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609 (or 607 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 1044005540 is about 32311.0745720411. The cubic root of 1044005540 is about 1014.4584588031.

Adding to 1044005540 its reverse (455004401), we get a palindrome (1499009941).

The spelling of 1044005540 in words is "one billion, forty-four million, five thousand, five hundred forty".