28121184000 has 1728 divisors, whose sum is σ = 132315805440. Its totient is φ = 5573836800.

The previous prime is 28121183957. The next prime is 28121184001. The reversal of 28121184000 is 48112182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28121184001) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 760031982 + ... + 760032018.

Almost surely, 2^28121184000 is an apocalyptic number.

28121184000 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 28121184000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66157902720).

28121184000 is an abundant number, since it is smaller than the sum of its proper divisors (104194621440).

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

28121184000 is a wasteful number, since it uses less digits than its factorization.

28121184000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

Adding to 28121184000 its reverse (48112182), we get a palindrome (28169296182).

The spelling of 28121184000 in words is "twenty-eight billion, one hundred twenty-one million, one hundred eighty-four thousand".