2044393720 has 32 divisors (see below), whose sum is σ = 4706863920. Its totient is φ = 798739200.

The previous prime is 2044393699. The next prime is 2044393721. The reversal of 2044393720 is 273934402.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2044393721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 592581 + ... + 596020.

Almost surely, 2^2044393720 is an apocalyptic number.

2044393720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2044393720 is an abundant number, since it is smaller than the sum of its proper divisors (2662470200).

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

2044393720 is a wasteful number, since it uses less digits than its factorization.

2044393720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188655 (or 1188651 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 2044393720 is about 45214.9722990073. The cubic root of 2044393720 is about 1269.1750113567.

The spelling of 2044393720 in words is "two billion, forty-four million, three hundred ninety-three thousand, seven hundred twenty".