1004544040 has 32 divisors (see below), whose sum is σ = 2271600000. Its totient is φ = 399795264.

The previous prime is 1004544031. The next prime is 1004544053. The reversal of 1004544040 is 404454001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55140 + ... + 71059.

It is an arithmetic number, because the mean of its divisors is an integer number (70987500).

Almost surely, 2^1004544040 is an apocalyptic number.

1004544040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1004544040 is an abundant number, since it is smaller than the sum of its proper divisors (1267055960).

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

1004544040 is a wasteful number, since it uses less digits than its factorization.

1004544040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126409 (or 126405 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 1004544040 is about 31694.5427479243. The cubic root of 1004544040 is about 1001.5123915188.

Adding to 1004544040 its reverse (404454001), we get a palindrome (1408998041).

The spelling of 1004544040 in words is "one billion, four million, five hundred forty-four thousand, forty".