28110394800 has 180 divisors, whose sum is σ = 100187863360. Its totient is φ = 7293473280.

The previous prime is 28110394787. The next prime is 28110394801. The reversal of 28110394800 is 849301182.

It is a tau number, because it is divible by the number of its divisors (180).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (28110394801) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 27681 + ... + 238719.

Almost surely, 2^28110394800 is an apocalyptic number.

28110394800 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 28110394800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50093931680).

28110394800 is an abundant number, since it is smaller than the sum of its proper divisors (72077468560).

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

28110394800 is a wasteful number, since it uses less digits than its factorization.

28110394800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211100 (or 211086 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

Adding to 28110394800 its reverse (849301182), we get a palindrome (28959695982).

The spelling of 28110394800 in words is "twenty-eight billion, one hundred ten million, three hundred ninety-four thousand, eight hundred".