2243421780 has 24 divisors (see below), whose sum is σ = 6281581152. Its totient is φ = 598245792.

The previous prime is 2243421773. The next prime is 2243421781. The reversal of 2243421780 is 871243422.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2243421781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18695122 + ... + 18695241.

It is an arithmetic number, because the mean of its divisors is an integer number (261732548).

Almost surely, 2^2243421780 is an apocalyptic number.

2243421780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2243421780 is an abundant number, since it is smaller than the sum of its proper divisors (4038159372).

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

2243421780 is a wasteful number, since it uses less digits than its factorization.

2243421780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37390375 (or 37390373 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 2243421780 is about 47364.7736192204. The cubic root of 2243421780 is about 1309.0924273359.

The spelling of 2243421780 in words is "two billion, two hundred forty-three million, four hundred twenty-one thousand, seven hundred eighty".