28447508530128 has 80 divisors (see below), whose sum is σ = 75870157776896. Its totient is φ = 9175389644160.

The previous prime is 28447508530127. The next prime is 28447508530141. The reversal of 28447508530128 is 82103580574482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28447508530123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9897075 + ... + 12443757.

Almost surely, 2^{28447508530128} is an apocalyptic number.

It is an amenable number.

28447508530128 is an abundant number, since it is smaller than the sum of its proper divisors (47422649246768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28447508530128 is a wasteful number, since it uses less digits than its factorization.

28447508530128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2554232 (or 2554226 counting only the distinct ones).

The product of its (nonzero) digits is 17203200, while the sum is 57.

The spelling of 28447508530128 in words is "twenty-eight trillion, four hundred forty-seven billion, five hundred eight million, five hundred thirty thousand, one hundred twenty-eight".