28647043200 has 480 divisors, whose sum is σ = 107128560000. Its totient is φ = 7537121280.

The previous prime is 28647043141. The next prime is 28647043259. The reversal of 28647043200 is 234074682.

28647043200 is a `hidden beast` number, since 2 + 8 + 647 + 0 + 4 + 3 + 2 + 0 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (28647043141) and next prime (28647043259).

It is a tau number, because it is divible by the number of its divisors (480).

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

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 59 ways as a sum of consecutive naturals, for example, 20476101 + ... + 20477499.

It is an arithmetic number, because the mean of its divisors is an integer number (223184500).

Almost surely, 2^28647043200 is an apocalyptic number.

28647043200 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 28647043200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53564280000).

28647043200 is an abundant number, since it is smaller than the sum of its proper divisors (78481516800).

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

28647043200 is a wasteful number, since it uses less digits than its factorization.

28647043200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514 (or 1488 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The spelling of 28647043200 in words is "twenty-eight billion, six hundred forty-seven million, forty-three thousand, two hundred".