28563372587 has 8 divisors (see below), whose sum is σ = 28706791680. Its totient is φ = 28420298280.

The previous prime is 28563372493. The next prime is 28563372601. The reversal of 28563372587 is 78527336582.

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 a de Polignac number, because none of the positive numbers 2^k-28563372587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28563872587) 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, 80714 + ... + 252272.

It is an arithmetic number, because the mean of its divisors is an integer number (3588348960).

Almost surely, 2^28563372587 is an apocalyptic number.

28563372587 is a deficient number, since it is larger than the sum of its proper divisors (143419093).

28563372587 is a wasteful number, since it uses less digits than its factorization.

28563372587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172393.

The product of its digits is 16934400, while the sum is 56.

The spelling of 28563372587 in words is "twenty-eight billion, five hundred sixty-three million, three hundred seventy-two thousand, five hundred eighty-seven".