28863475200 has 1200 divisors, whose sum is σ = 126353725344. Its totient is φ = 6370099200.

The previous prime is 28863475153. The next prime is 28863475243. The reversal of 28863475200 is 257436882.

28863475200 is a `hidden beast` number, since 2 + 8 + 8 + 634 + 7 + 5 + 2 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1200).

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 polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 297561552 + ... + 297561648.

Almost surely, 2^28863475200 is an apocalyptic number.

28863475200 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 28863475200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63176862672).

28863475200 is an abundant number, since it is smaller than the sum of its proper divisors (97490250144).

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

28863475200 is an equidigital number, since it uses as much as digits as its factorization.

28863475200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 28863475200 in words is "twenty-eight billion, eight hundred sixty-three million, four hundred seventy-five thousand, two hundred".