28124808075 has 432 divisors, whose sum is σ = 67898084800. Its totient is φ = 11054776320.

The previous prime is 28124808059. The next prime is 28124808077. The reversal of 28124808075 is 57080842182.

It is a happy number.

28124808075 is a `hidden beast` number, since 28 + 1 + 2 + 480 + 80 + 75 = 666.

It is not a de Polignac number, because 28124808075 - 2⁴ = 28124808059 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28124808075.

It is not an unprimeable number, because it can be changed into a prime (28124808077) by changing a digit.

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 431 ways as a sum of consecutive naturals, for example, 289946427 + ... + 289946523.

Almost surely, 2^28124808075 is an apocalyptic number.

28124808075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28124808075 is an abundant number, since it is smaller than the sum of its proper divisors (39773276725).

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

28124808075 is a wasteful number, since it uses less digits than its factorization.

28124808075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 45.

The spelling of 28124808075 in words is "twenty-eight billion, one hundred twenty-four million, eight hundred eight thousand, seventy-five".