28110568500 has 288 divisors, whose sum is σ = 102783582720. Its totient is φ = 6334272000.

The previous prime is 28110568489. The next prime is 28110568529. The reversal of 28110568500 is 586501182.

28110568500 is a `hidden beast` number, since 2 + 81 + 10 + 5 + 68 + 500 = 666.

It is a super-2 number, since 2×28110568500² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2230216 + ... + 2242784.

It is an arithmetic number, because the mean of its divisors is an integer number (356887440).

Almost surely, 2^28110568500 is an apocalyptic number.

28110568500 is a gapful number since it is divisible by the number (20) 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 28110568500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51391791360).

28110568500 is an abundant number, since it is smaller than the sum of its proper divisors (74673014220).

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

28110568500 is a wasteful number, since it uses less digits than its factorization.

28110568500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12672 (or 12657 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 36.

The spelling of 28110568500 in words is "twenty-eight billion, one hundred ten million, five hundred sixty-eight thousand, five hundred".