28252573987 has 16 divisors (see below), whose sum is σ = 31092601824. Its totient is φ = 25670198400.

The previous prime is 28252573969. The next prime is 28252574017. The reversal of 28252573987 is 78937525282.

It is not a de Polignac number, because 28252573987 - 2²³ = 28244185379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28252573487) 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 15 ways as a sum of consecutive naturals, for example, 3052687 + ... + 3061927.

It is an arithmetic number, because the mean of its divisors is an integer number (1943287614).

Almost surely, 2^28252573987 is an apocalyptic number.

28252573987 is a deficient number, since it is larger than the sum of its proper divisors (2840027837).

28252573987 is an equidigital number, since it uses as much as digits as its factorization.

28252573987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11571 (or 11549 counting only the distinct ones).

The product of its digits is 16934400, while the sum is 58.

The spelling of 28252573987 in words is "twenty-eight billion, two hundred fifty-two million, five hundred seventy-three thousand, nine hundred eighty-seven".