8223185340 has 96 divisors (see below), whose sum is σ = 25667093760. Its totient is φ = 2185662528.

The previous prime is 8223185339. The next prime is 8223185359. The reversal of 8223185340 is 435813228.

8223185340 is a `hidden beast` number, since 8 + 2 + 231 + 85 + 340 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 8223185295 and 8223185304.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140979 + ... + 190581.

It is an arithmetic number, because the mean of its divisors is an integer number (267365560).

Almost surely, 2^8223185340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8223185340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12833546880).

8223185340 is an abundant number, since it is smaller than the sum of its proper divisors (17443908420).

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

8223185340 is a wasteful number, since it uses less digits than its factorization.

8223185340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49928 (or 49920 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 8223185340 is about 90681.7806397735. The cubic root of 8223185340 is about 2018.4284528586.

Adding to 8223185340 its reverse (435813228), we get a palindrome (8658998568).

The spelling of 8223185340 in words is "eight billion, two hundred twenty-three million, one hundred eighty-five thousand, three hundred forty".