2243521140 has 144 divisors (see below), whose sum is σ = 7577523072. Its totient is φ = 485782272.

The previous prime is 2243521139. The next prime is 2243521157. The reversal of 2243521140 is 411253422.

2243521140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2243521140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 144222 + ... + 159018.

It is an arithmetic number, because the mean of its divisors is an integer number (52621688).

Almost surely, 2^2243521140 is an apocalyptic number.

2243521140 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 2243521140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3788761536).

2243521140 is an abundant number, since it is smaller than the sum of its proper divisors (5334001932).

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

2243521140 is a wasteful number, since it uses less digits than its factorization.

2243521140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14854 (or 14833 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 2243521140 is about 47365.8224883724. The cubic root of 2243521140 is about 1309.1117533946. Note that the first 3 decimals are identical.

Adding to 2243521140 its reverse (411253422), we get a palindrome (2654774562).

The spelling of 2243521140 in words is "two billion, two hundred forty-three million, five hundred twenty-one thousand, one hundred forty".