28863171360 has 72 divisors (see below), whose sum is σ = 98495577180. Its totient is φ = 7696845312.

The previous prime is 28863171347. The next prime is 28863171361. The reversal of 28863171360 is 6317136882.

28863171360 is a `hidden beast` number, since 2 + 8 + 8 + 631 + 7 + 1 + 3 + 6 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 27039198096 + 1823973264 = 164436^2 + 42708^2 .

It is a tau number, because it is divible by the number of its divisors (72).

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

It is not an unprimeable number, because it can be changed into a prime (28863171361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10020495 + ... + 10023374.

Almost surely, 2^28863171360 is an apocalyptic number.

28863171360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28863171360 is an abundant number, since it is smaller than the sum of its proper divisors (69632405820).

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

28863171360 is a wasteful number, since it uses less digits than its factorization.

28863171360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20043890 (or 20043879 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 28863171360 in words is "twenty-eight billion, eight hundred sixty-three million, one hundred seventy-one thousand, three hundred sixty".