28898309088 has 240 divisors, whose sum is σ = 93042069120. Its totient is φ = 8726227200.

The previous prime is 28898309017. The next prime is 28898309183. The reversal of 28898309088 is 88090389882.

It is a super-2 number, since 2×28898309088² (a number of 22 digits) contains 22 as substring.

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 39 ways as a sum of consecutive naturals, for example, 8865603 + ... + 8868861.

It is an arithmetic number, because the mean of its divisors is an integer number (387675288).

Almost surely, 2^28898309088 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 28898309088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46521034560).

28898309088 is an abundant number, since it is smaller than the sum of its proper divisors (64143760032).

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

28898309088 is a wasteful number, since it uses less digits than its factorization.

28898309088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3603 (or 3586 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 63.

The spelling of 28898309088 in words is "twenty-eight billion, eight hundred ninety-eight million, three hundred nine thousand, eighty-eight".