28817268480 has 2304 divisors, whose sum is σ = 148345344000. Its totient is φ = 5202247680.

The previous prime is 28817268451. The next prime is 28817268481. The reversal of 28817268480 is 8486271882.

28817268480 is a `hidden beast` number, since 28 + 81 + 7 + 2 + 68 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (2304).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28817268481) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 1695133432 + ... + 1695133448.

It is an arithmetic number, because the mean of its divisors is an integer number (64386000).

Almost surely, 2^28817268480 is an apocalyptic number.

28817268480 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 28817268480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74172672000).

28817268480 is an abundant number, since it is smaller than the sum of its proper divisors (119528075520).

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

28817268480 is a wasteful number, since it uses less digits than its factorization.

28817268480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 2752512, while the sum is 54.

The spelling of 28817268480 in words is "twenty-eight billion, eight hundred seventeen million, two hundred sixty-eight thousand, four hundred eighty".