1044504640 has 28 divisors (see below), whose sum is σ = 2487227436. Its totient is φ = 417801728.

The previous prime is 1044504611. The next prime is 1044504661. The reversal of 1044504640 is 464054401.

It can be written as a sum of positive squares in 2 ways, for example, as 513294336 + 531210304 = 22656^2 + 23048^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1044504599 and 1044504608.

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 3 ways as a sum of consecutive naturals, for example, 1631719 + ... + 1632358.

Almost surely, 2^1044504640 is an apocalyptic number.

1044504640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1044504640 is an abundant number, since it is smaller than the sum of its proper divisors (1442722796).

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

1044504640 is an equidigital number, since it uses as much as digits as its factorization.

1044504640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3264094 (or 3264084 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 1044504640 is about 32318.7970073145. The cubic root of 1044504640 is about 1014.6200912642.

The spelling of 1044504640 in words is "one billion, forty-four million, five hundred four thousand, six hundred forty".