2044323440 has 80 divisors (see below), whose sum is σ = 5042489760. Its totient is φ = 768122880.

The previous prime is 2044323431. The next prime is 2044323443. The reversal of 2044323440 is 443234402.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2044323443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 895100 + ... + 897380.

It is an arithmetic number, because the mean of its divisors is an integer number (63031122).

Almost surely, 2^2044323440 is an apocalyptic number.

2044323440 is a gapful number since it is divisible by the number (20) 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 2044323440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2521244880).

2044323440 is an abundant number, since it is smaller than the sum of its proper divisors (2998166320).

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

2044323440 is a wasteful number, since it uses less digits than its factorization.

2044323440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2970 (or 2964 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

The square root of 2044323440 is about 45214.1951161358. The cubic root of 2044323440 is about 1269.1604677390.

Adding to 2044323440 its reverse (443234402), we get a palindrome (2487557842).

The spelling of 2044323440 in words is "two billion, forty-four million, three hundred twenty-three thousand, four hundred forty".