1044385320 has 64 divisors (see below), whose sum is σ = 3417992640. Its totient is φ = 253184000.

The previous prime is 1044385313. The next prime is 1044385343. The reversal of 1044385320 is 235834401.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 15 ways as a sum of consecutive naturals, for example, 394281 + ... + 396920.

It is an arithmetic number, because the mean of its divisors is an integer number (53406135).

Almost surely, 2^1044385320 is an apocalyptic number.

1044385320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1044385320 is an abundant number, since it is smaller than the sum of its proper divisors (2373607320).

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

1044385320 is a wasteful number, since it uses less digits than its factorization.

1044385320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791226 (or 791222 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 1044385320 is about 32316.9509700405. The cubic root of 1044385320 is about 1014.5814544231.

The spelling of 1044385320 in words is "one billion, forty-four million, three hundred eighty-five thousand, three hundred twenty".