2243636406 has 48 divisors (see below), whose sum is σ = 5315319360. Its totient is φ = 678328560.

The previous prime is 2243636401. The next prime is 2243636429. The reversal of 2243636406 is 6046363422.

2243636406 is a `hidden beast` number, since 2 + 2 + 4 + 3 + 6 + 3 + 640 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2243636401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74925 + ... + 100503.

It is an arithmetic number, because the mean of its divisors is an integer number (110735820).

Almost surely, 2^2243636406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2243636406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2657659680).

2243636406 is an abundant number, since it is smaller than the sum of its proper divisors (3071682954).

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

2243636406 is a wasteful number, since it uses less digits than its factorization.

2243636406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26041 (or 26038 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

The square root of 2243636406 is about 47367.0392361608. The cubic root of 2243636406 is about 1309.1341725417.

Adding to 2243636406 its reverse (6046363422), we get a palindrome (8289999828).

The spelling of 2243636406 in words is "two billion, two hundred forty-three million, six hundred thirty-six thousand, four hundred six".