28409243184 has 320 divisors, whose sum is σ = 99207936000. Its totient is φ = 7598333952.

The previous prime is 28409243153. The next prime is 28409243197. The reversal of 28409243184 is 48134290482.

28409243184 is a `hidden beast` number, since 28 + 409 + 2 + 43 + 184 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10228804 + ... + 10231580.

It is an arithmetic number, because the mean of its divisors is an integer number (310024800).

Almost surely, 2^28409243184 is an apocalyptic number.

28409243184 is a gapful number since it is divisible by the number (24) 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 28409243184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49603968000).

28409243184 is an abundant number, since it is smaller than the sum of its proper divisors (70798692816).

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

28409243184 is a wasteful number, since it uses less digits than its factorization.

28409243184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3017 (or 3005 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The spelling of 28409243184 in words is "twenty-eight billion, four hundred nine million, two hundred forty-three thousand, one hundred eighty-four".