28110841920 has 336 divisors, whose sum is σ = 110902821120. Its totient is φ = 6402060288.

The previous prime is 28110841907. The next prime is 28110841999. The reversal of 28110841920 is 2914801182.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5904501 + ... + 5909259.

It is an arithmetic number, because the mean of its divisors is an integer number (330067920).

Almost surely, 2^28110841920 is an apocalyptic number.

28110841920 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 28110841920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55451410560).

28110841920 is an abundant number, since it is smaller than the sum of its proper divisors (82791979200).

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

28110841920 is a wasteful number, since it uses less digits than its factorization.

28110841920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5082 (or 5069 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The spelling of 28110841920 in words is "twenty-eight billion, one hundred ten million, eight hundred forty-one thousand, nine hundred twenty".