2243504240 has 40 divisors (see below), whose sum is σ = 5232977568. Its totient is φ = 894506240.

The previous prime is 2243504189. The next prime is 2243504243. The reversal of 2243504240 is 424053422.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×2243504240² = 10066622549795955200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2243504243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20207 + ... + 69966.

Almost surely, 2^2243504240 is an apocalyptic number.

2243504240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2243504240 is an abundant number, since it is smaller than the sum of its proper divisors (2989473328).

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

2243504240 is a wasteful number, since it uses less digits than its factorization.

2243504240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90497 (or 90491 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 2243504240 is about 47365.6440893608. The cubic root of 2243504240 is about 1309.1084662932.

Adding to 2243504240 its reverse (424053422), we get a palindrome (2667557662).

The spelling of 2243504240 in words is "two billion, two hundred forty-three million, five hundred four thousand, two hundred forty".