28549556752 has 20 divisors (see below), whose sum is σ = 55333589500. Its totient is φ = 14269920768.

The previous prime is 28549556639. The next prime is 28549556767. The reversal of 28549556752 is 25765594582.

It can be written as a sum of positive squares in 2 ways, for example, as 19203307776 + 9346248976 = 138576^2 + 96676^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 254877 + ... + 349372.

It is an arithmetic number, because the mean of its divisors is an integer number (2766679475).

Almost surely, 2^28549556752 is an apocalyptic number.

It is an amenable number.

28549556752 is a deficient number, since it is larger than the sum of its proper divisors (26784032748).

28549556752 is a wasteful number, since it uses less digits than its factorization.

28549556752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607210 (or 607204 counting only the distinct ones).

The product of its digits is 30240000, while the sum is 58.

The spelling of 28549556752 in words is "twenty-eight billion, five hundred forty-nine million, five hundred fifty-six thousand, seven hundred fifty-two".