28058051868 has 192 divisors, whose sum is σ = 86141153280. Its totient is φ = 6886425600.

The previous prime is 28058051867. The next prime is 28058051873. The reversal of 28058051868 is 86815085082.

It is a self number, because there is not a number n which added to its sum of digits gives 28058051868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28058051867) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7599903 + ... + 7603593.

It is an arithmetic number, because the mean of its divisors is an integer number (448651840).

Almost surely, 2^28058051868 is an apocalyptic number.

28058051868 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28058051868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43070576640).

28058051868 is an abundant number, since it is smaller than the sum of its proper divisors (58083101412).

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

28058051868 is a wasteful number, since it uses less digits than its factorization.

28058051868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4168 (or 4166 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 51.

The spelling of 28058051868 in words is "twenty-eight billion, fifty-eight million, fifty-one thousand, eight hundred sixty-eight".