28295928472548 has 288 divisors, whose sum is σ = 79291914024960. Its totient is φ = 7766582503680.

The previous prime is 28295928472523. The next prime is 28295928472561. The reversal of 28295928472548 is 84527482959282.

It is a super-2 number, since 2×28295928472548² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28295928472548.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 4793479765 + ... + 4793485667.

It is an arithmetic number, because the mean of its divisors is an integer number (275319145920).

Almost surely, 2^{28295928472548} 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 28295928472548, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39645957012480).

28295928472548 is an abundant number, since it is smaller than the sum of its proper divisors (50995985552412).

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

28295928472548 is a wasteful number, since it uses less digits than its factorization.

28295928472548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9599 (or 9574 counting only the distinct ones).

The product of its digits is 1857945600, while the sum is 75.

The spelling of 28295928472548 in words is "twenty-eight trillion, two hundred ninety-five billion, nine hundred twenty-eight million, four hundred seventy-two thousand, five hundred forty-eight".