2243943720 has 96 divisors (see below), whose sum is σ = 7345447200. Its totient is φ = 594066816.

The previous prime is 2243943703. The next prime is 2243943721. The reversal of 2243943720 is 273493422.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2243943721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27619 + ... + 72461.

It is an arithmetic number, because the mean of its divisors is an integer number (76515075).

Almost surely, 2^2243943720 is an apocalyptic number.

2243943720 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 2243943720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3672723600).

2243943720 is an abundant number, since it is smaller than the sum of its proper divisors (5101503480).

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

2243943720 is a wasteful number, since it uses less digits than its factorization.

2243943720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44999 (or 44992 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 2243943720 is about 47370.2830897178. The cubic root of 2243943720 is about 1309.1939411226.

The spelling of 2243943720 in words is "two billion, two hundred forty-three million, nine hundred forty-three thousand, seven hundred twenty".