28158568830 has 288 divisors, whose sum is σ = 88345790208. Its totient is φ = 6197990400.

The previous prime is 28158568829. The next prime is 28158568847. The reversal of 28158568830 is 3886585182.

It is a happy number.

28158568830 is a `hidden beast` number, since 28 + 1 + 58 + 568 + 8 + 3 + 0 = 666.

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 143 ways as a sum of consecutive naturals, for example, 38415144 + ... + 38415876.

It is an arithmetic number, because the mean of its divisors is an integer number (306756216).

Almost surely, 2^28158568830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28158568830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44172895104).

28158568830 is an abundant number, since it is smaller than the sum of its proper divisors (60187221378).

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

28158568830 is a wasteful number, since it uses less digits than its factorization.

28158568830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072 (or 1062 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 54.

The spelling of 28158568830 in words is "twenty-eight billion, one hundred fifty-eight million, five hundred sixty-eight thousand, eight hundred thirty".