2243530440 has 64 divisors (see below), whose sum is σ = 7478438400. Its totient is φ = 598274496.

The previous prime is 2243530427. The next prime is 2243530441. The reversal of 2243530440 is 440353422.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2243530441) 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, 1037592 + ... + 1039751.

It is an arithmetic number, because the mean of its divisors is an integer number (116850600).

Almost surely, 2^2243530440 is an apocalyptic number.

2243530440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2243530440 is an abundant number, since it is smaller than the sum of its proper divisors (5234907960).

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

2243530440 is a wasteful number, since it uses less digits than its factorization.

2243530440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2077363 (or 2077353 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 2243530440 is about 47365.9206603229. The cubic root of 2243530440 is about 1309.1135622658.

Adding to 2243530440 its reverse (440353422), we get a palindrome (2683883862).

The spelling of 2243530440 in words is "two billion, two hundred forty-three million, five hundred thirty thousand, four hundred forty".