28646784000 has 616 divisors, whose sum is σ = 107501201808. Its totient is φ = 7614259200.

The previous prime is 28646783999. The next prime is 28646784013. The reversal of 28646784000 is 48764682.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 93311847 + ... + 93312153.

It is an arithmetic number, because the mean of its divisors is an integer number (174514938).

Almost surely, 2^28646784000 is an apocalyptic number.

28646784000 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 28646784000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53750600904).

28646784000 is an abundant number, since it is smaller than the sum of its proper divisors (78854417808).

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

28646784000 is an frugal number, since it uses more digits than its factorization.

28646784000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The spelling of 28646784000 in words is "twenty-eight billion, six hundred forty-six million, seven hundred eighty-four thousand".