28110416720 has 80 divisors (see below), whose sum is σ = 67017866832. Its totient is φ = 10958929920.

The previous prime is 28110416669. The next prime is 28110416729. The reversal of 28110416720 is 2761401182.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 5708709136 + 22401707584 = 75556^2 + 149672^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28110416729) 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, 3778124 + ... + 3785556.

Almost surely, 2^28110416720 is an apocalyptic number.

28110416720 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 28110416720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33508933416).

28110416720 is an abundant number, since it is smaller than the sum of its proper divisors (38907450112).

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

28110416720 is a wasteful number, since it uses less digits than its factorization.

28110416720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8640 (or 8634 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The spelling of 28110416720 in words is "twenty-eight billion, one hundred ten million, four hundred sixteen thousand, seven hundred twenty".