2243213440 has 64 divisors (see below), whose sum is σ = 5775217560. Its totient is φ = 828260352.

The previous prime is 2243213431. The next prime is 2243213447. The reversal of 2243213440 is 443123422.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2051002944 + 192210496 = 45288^2 + 13864^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (2243213447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126489 + ... + 143128.

Almost surely, 2^2243213440 is an apocalyptic number.

2243213440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2243213440 is an abundant number, since it is smaller than the sum of its proper divisors (3532004120).

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

2243213440 is a wasteful number, since it uses less digits than its factorization.

2243213440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269649 (or 269637 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 2243213440 is about 47362.5742543625. The cubic root of 2243213440 is about 1309.0519022234.

Adding to 2243213440 its reverse (443123422), we get a palindrome (2686336862).

The spelling of 2243213440 in words is "two billion, two hundred forty-three million, two hundred thirteen thousand, four hundred forty".