28300072075 has 24 divisors (see below), whose sum is σ = 38396002320. Its totient is φ = 20520729600.

The previous prime is 28300072061. The next prime is 28300072109. The reversal of 28300072075 is 57027000382.

It is not a de Polignac number, because 28300072075 - 2²¹ = 28297974923 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28300072075.

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 23 ways as a sum of consecutive naturals, for example, 60010 + ... + 245359.

It is an arithmetic number, because the mean of its divisors is an integer number (1599833430).

Almost surely, 2^28300072075 is an apocalyptic number.

28300072075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28300072075 is a deficient number, since it is larger than the sum of its proper divisors (10095930245).

28300072075 is a wasteful number, since it uses less digits than its factorization.

28300072075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305727 (or 305722 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The spelling of 28300072075 in words is "twenty-eight billion, three hundred million, seventy-two thousand, seventy-five".