28305530075 has 12 divisors (see below), whose sum is σ = 35184686280. Its totient is φ = 22589050560.

The previous prime is 28305530059. The next prime is 28305530093. The reversal of 28305530075 is 57003550382.

It is not a de Polignac number, because 28305530075 - 2⁴ = 28305530059 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1373909 + ... + 1394358.

It is an arithmetic number, because the mean of its divisors is an integer number (2932057190).

Almost surely, 2^28305530075 is an apocalyptic number.

28305530075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28305530075 is a deficient number, since it is larger than the sum of its proper divisors (6879156205).

28305530075 is a wasteful number, since it uses less digits than its factorization.

28305530075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2768686 (or 2768681 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 38.

The spelling of 28305530075 in words is "twenty-eight billion, three hundred five million, five hundred thirty thousand, seventy-five".