28548166980 has 192 divisors, whose sum is σ = 88246464768. Its totient is φ = 6865797120.

The previous prime is 28548166901. The next prime is 28548166987. The reversal of 28548166980 is 8966184582.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28548166980.

It is not an unprimeable number, because it can be changed into a prime (28548166987) 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 in 63 ways as a sum of consecutive naturals, for example, 2318440 + ... + 2330720.

It is an arithmetic number, because the mean of its divisors is an integer number (459617004).

Almost surely, 2^28548166980 is an apocalyptic number.

28548166980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28548166980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44123232384).

28548166980 is an abundant number, since it is smaller than the sum of its proper divisors (59698297788).

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

28548166980 is a wasteful number, since it uses less digits than its factorization.

28548166980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12406 (or 12404 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 57.

The spelling of 28548166980 in words is "twenty-eight billion, five hundred forty-eight million, one hundred sixty-six thousand, nine hundred eighty".