28530175252 has 6 divisors (see below), whose sum is σ = 49927806698. Its totient is φ = 14265087624.

The previous prime is 28530175241. The next prime is 28530175259. The reversal of 28530175252 is 25257103582.

It can be written as a sum of positive squares in only one way, i.e., 26832405636 + 1697769616 = 163806^2 + 41204^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28530175259) 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 as a sum of consecutive naturals, namely, 3566271903 + ... + 3566271910.

Almost surely, 2^28530175252 is an apocalyptic number.

It is an amenable number.

28530175252 is a deficient number, since it is larger than the sum of its proper divisors (21397631446).

28530175252 is a wasteful number, since it uses less digits than its factorization.

28530175252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7132543817 (or 7132543815 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 40.

The spelling of 28530175252 in words is "twenty-eight billion, five hundred thirty million, one hundred seventy-five thousand, two hundred fifty-two".