28030500275 has 24 divisors (see below), whose sum is σ = 36565851600. Its totient is φ = 21284144000.

The previous prime is 28030500271. The next prime is 28030500331. The reversal of 28030500275 is 57200503082.

It is not a de Polignac number, because 28030500275 - 2² = 28030500271 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28030500271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 284876 + ... + 370425.

It is an arithmetic number, because the mean of its divisors is an integer number (1523577150).

Almost surely, 2^28030500275 is an apocalyptic number.

28030500275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28030500275 is a deficient number, since it is larger than the sum of its proper divisors (8535351325).

28030500275 is a wasteful number, since it uses less digits than its factorization.

28030500275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655399 (or 655394 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The spelling of 28030500275 in words is "twenty-eight billion, thirty million, five hundred thousand, two hundred seventy-five".