5206323640 has 32 divisors (see below), whose sum is σ = 13387690080. Its totient is φ = 1785025152.

The previous prime is 5206323569. The next prime is 5206323643. The reversal of 5206323640 is 463236025.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5206323643) 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, 9296727 + ... + 9297286.

It is an arithmetic number, because the mean of its divisors is an integer number (418365315).

Almost surely, 2^5206323640 is an apocalyptic number.

It is an amenable number.

5206323640 is an abundant number, since it is smaller than the sum of its proper divisors (8181366440).

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

5206323640 is a wasteful number, since it uses less digits than its factorization.

5206323640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18594031 (or 18594027 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 5206323640 is about 72154.8587414597. The cubic root of 5206323640 is about 1733.1802062295.

Adding to 5206323640 its reverse (463236025), we get a palindrome (5669559665).

The spelling of 5206323640 in words is "five billion, two hundred six million, three hundred twenty-three thousand, six hundred forty".