2223045640 has 48 divisors (see below), whose sum is σ = 5071796100. Its totient is φ = 876953088.

The previous prime is 2223045607. The next prime is 2223045659. The reversal of 2223045640 is 465403222.

It can be written as a sum of positive squares in 6 ways, for example, as 1811523844 + 411521796 = 42562^2 + 20286^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2223045599 and 2223045608.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 207946 + ... + 218374.

Almost surely, 2^2223045640 is an apocalyptic number.

2223045640 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 2223045640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2535898050).

2223045640 is an abundant number, since it is smaller than the sum of its proper divisors (2848750460).

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

2223045640 is a wasteful number, since it uses less digits than its factorization.

2223045640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10586 (or 10509 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 2223045640 is about 47149.1849346306. The cubic root of 2223045640 is about 1305.1170390668.

Adding to 2223045640 its reverse (465403222), we get a palindrome (2688448862).

The spelling of 2223045640 in words is "two billion, two hundred twenty-three million, forty-five thousand, six hundred forty".