28098916480 has 128 divisors (see below), whose sum is σ = 71251488000. Its totient is φ = 10559668224.

The previous prime is 28098916451. The next prime is 28098916487. The reversal of 28098916480 is 8461989082.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (28098916487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7167961 + ... + 7171879.

It is an arithmetic number, because the mean of its divisors is an integer number (556652250).

Almost surely, 2^28098916480 is an apocalyptic number.

28098916480 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 28098916480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35625744000).

28098916480 is an abundant number, since it is smaller than the sum of its proper divisors (43152571520).

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

28098916480 is a wasteful number, since it uses less digits than its factorization.

28098916480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4614 (or 4602 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 55.

The spelling of 28098916480 in words is "twenty-eight billion, ninety-eight million, nine hundred sixteen thousand, four hundred eighty".