28125553176 has 144 divisors (see below), whose sum is σ = 89129860560. Its totient is φ = 7848731520.

The previous prime is 28125553171. The next prime is 28125553193. The reversal of 28125553176 is 67135552182.

28125553176 is a `hidden beast` number, since 2 + 8 + 1 + 25 + 553 + 1 + 76 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28125553171) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 916806 + ... + 946986.

It is an arithmetic number, because the mean of its divisors is an integer number (618957365).

Almost surely, 2^28125553176 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28125553176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44564930280).

28125553176 is an abundant number, since it is smaller than the sum of its proper divisors (61004307384).

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

28125553176 is a wasteful number, since it uses less digits than its factorization.

28125553176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30286 (or 30236 counting only the distinct ones).

The product of its digits is 504000, while the sum is 45.

The spelling of 28125553176 in words is "twenty-eight billion, one hundred twenty-five million, five hundred fifty-three thousand, one hundred seventy-six".