8221903500 has 96 divisors (see below), whose sum is σ = 24003645120. Its totient is φ = 2186880000.

The previous prime is 8221903489. The next prime is 8221903519. The reversal of 8221903500 is 53091228.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 594666 + ... + 608334.

It is an arithmetic number, because the mean of its divisors is an integer number (250037970).

Almost surely, 2^8221903500 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 8221903500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12001822560).

8221903500 is an abundant number, since it is smaller than the sum of its proper divisors (15781741620).

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

8221903500 is a wasteful number, since it uses less digits than its factorization.

8221903500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14092 (or 14080 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 8221903500 is about 90674.7125719183. The cubic root of 8221903500 is about 2018.3235690588.

Adding to 8221903500 its reverse (53091228), we get a palindrome (8274994728).

The spelling of 8221903500 in words is "eight billion, two hundred twenty-one million, nine hundred three thousand, five hundred".