28500800531 has 8 divisors (see below), whose sum is σ = 32772175104. Its totient is φ = 24279383880.

The previous prime is 28500800521. The next prime is 28500800539. The reversal of 28500800531 is 13500800582.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28500800531 - 2¹⁰ = 28500799507 is a prime.

It is a super-2 number, since 2×28500800531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28500800539) 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 7 ways as a sum of consecutive naturals, for example, 12488255 + ... + 12490536.

It is an arithmetic number, because the mean of its divisors is an integer number (4096521888).

Almost surely, 2^28500800531 is an apocalyptic number.

28500800531 is a deficient number, since it is larger than the sum of its proper divisors (4271374573).

28500800531 is a wasteful number, since it uses less digits than its factorization.

28500800531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24978961.

The product of its (nonzero) digits is 9600, while the sum is 32.

The spelling of 28500800531 in words is "twenty-eight billion, five hundred million, eight hundred thousand, five hundred thirty-one".