28287134537 has 8 divisors (see below), whose sum is σ = 28852468800. Its totient is φ = 27725078160.

The previous prime is 28287134521. The next prime is 28287134543. The reversal of 28287134537 is 73543178282.

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 28287134537 - 2⁴ = 28287134521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28287134137) 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, 802037 + ... + 836562.

It is an arithmetic number, because the mean of its divisors is an integer number (3606558600).

Almost surely, 2^28287134537 is an apocalyptic number.

It is an amenable number.

28287134537 is a deficient number, since it is larger than the sum of its proper divisors (565334263).

28287134537 is a wasteful number, since it uses less digits than its factorization.

28287134537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638943.

The product of its digits is 2257920, while the sum is 50.

The spelling of 28287134537 in words is "twenty-eight billion, two hundred eighty-seven million, one hundred thirty-four thousand, five hundred thirty-seven".