28581452588 has 24 divisors (see below), whose sum is σ = 53881932720. Its totient is φ = 13187304000.

The previous prime is 28581452561. The next prime is 28581452621. The reversal of 28581452588 is 88525418582.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84518 + ... + 253586.

It is an arithmetic number, because the mean of its divisors is an integer number (2245080530).

Almost surely, 2^28581452588 is an apocalyptic number.

It is an amenable number.

28581452588 is a deficient number, since it is larger than the sum of its proper divisors (25300480132).

28581452588 is a wasteful number, since it uses less digits than its factorization.

28581452588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172337 (or 172335 counting only the distinct ones).

The product of its digits is 8192000, while the sum is 56.

The spelling of 28581452588 in words is "twenty-eight billion, five hundred eighty-one million, four hundred fifty-two thousand, five hundred eighty-eight".