28169098848 has 144 divisors (see below), whose sum is σ = 90207516672. Its totient is φ = 8260704000.

The previous prime is 28169098823. The next prime is 28169098849. The reversal of 28169098848 is 84889096182.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28169098849) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45208 + ... + 241623.

It is an arithmetic number, because the mean of its divisors is an integer number (626441088).

Almost surely, 2^28169098848 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 28169098848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45103758336).

28169098848 is an abundant number, since it is smaller than the sum of its proper divisors (62038417824).

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

28169098848 is a wasteful number, since it uses less digits than its factorization.

28169098848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286889 (or 286878 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 63.

The spelling of 28169098848 in words is "twenty-eight billion, one hundred sixty-nine million, ninety-eight thousand, eight hundred forty-eight".