28334536287 has 4 divisors (see below), whose sum is σ = 37779381720. Its totient is φ = 18889690856.

The previous prime is 28334536271. The next prime is 28334536289. The reversal of 28334536287 is 78263543382.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28334536287 - 2⁴ = 28334536271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28334536289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4722422712 + ... + 4722422717.

It is an arithmetic number, because the mean of its divisors is an integer number (9444845430).

Almost surely, 2^28334536287 is an apocalyptic number.

28334536287 is a deficient number, since it is larger than the sum of its proper divisors (9444845433).

28334536287 is an equidigital number, since it uses as much as digits as its factorization.

28334536287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9444845432.

The product of its digits is 5806080, while the sum is 51.

The spelling of 28334536287 in words is "twenty-eight billion, three hundred thirty-four million, five hundred thirty-six thousand, two hundred eighty-seven".