28478088895 has 16 divisors (see below), whose sum is σ = 34957918080. Its totient is φ = 22261250304.

The previous prime is 28478088893. The next prime is 28478088931. The reversal of 28478088895 is 59888087482.

It is a cyclic number.

It is not a de Polignac number, because 28478088895 - 2¹ = 28478088893 is a prime.

It is a super-2 number, since 2×28478088895² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28478088895.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28478088893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45211 + ... + 242899.

It is an arithmetic number, because the mean of its divisors is an integer number (2184869880).

Almost surely, 2^28478088895 is an apocalyptic number.

28478088895 is a deficient number, since it is larger than the sum of its proper divisors (6479829185).

28478088895 is a wasteful number, since it uses less digits than its factorization.

28478088895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198354.

The product of its (nonzero) digits is 82575360, while the sum is 67.

The spelling of 28478088895 in words is "twenty-eight billion, four hundred seventy-eight million, eighty-eight thousand, eight hundred ninety-five".