1044340020 has 96 divisors (see below), whose sum is σ = 3254697600. Its totient is φ = 278007552.

The previous prime is 1044340019. The next prime is 1044340049. The reversal of 1044340020 is 200434401.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1044339975 and 1044340002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 397752 + ... + 400368.

It is an arithmetic number, because the mean of its divisors is an integer number (33903100).

Almost surely, 2^1044340020 is an apocalyptic number.

1044340020 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 1044340020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1627348800).

1044340020 is an abundant number, since it is smaller than the sum of its proper divisors (2210357580).

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

1044340020 is a wasteful number, since it uses less digits than its factorization.

1044340020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3374 (or 3366 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1044340020 is about 32316.2500918655. The cubic root of 1044340020 is about 1014.5667851232.

Adding to 1044340020 its reverse (200434401), we get a palindrome (1244774421).

The spelling of 1044340020 in words is "one billion, forty-four million, three hundred forty thousand, twenty".