28322952008 has 108 divisors (see below), whose sum is σ = 60417320985. Its totient is φ = 12440945088.

The previous prime is 28322951989. The next prime is 28322952011. The reversal of 28322952008 is 80025922382.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 24216961924 + 4105990084 = 155618^2 + 64078^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=119002.

It is a super-2 number, since 2×28322952008² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 26 ways as a sum of consecutive naturals, for example, 142326293 + ... + 142326491.

Almost surely, 2^28322952008 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 28322952008

28322952008 is an abundant number, since it is smaller than the sum of its proper divisors (32094368977).

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

28322952008 is a wasteful number, since it uses less digits than its factorization.

28322952008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 28322952008 in words is "twenty-eight billion, three hundred twenty-two million, nine hundred fifty-two thousand, eight".