28797448680 has 768 divisors, whose sum is σ = 126710438400. Its totient is φ = 5477621760.

The previous prime is 28797448657. The next prime is 28797448681. The reversal of 28797448680 is 8684479782.

28797448680 is a `hidden beast` number, since 2 + 8 + 7 + 9 + 74 + 486 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (28797448681) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 56576266 + ... + 56576774.

It is an arithmetic number, because the mean of its divisors is an integer number (164987550).

Almost surely, 2^28797448680 is an apocalyptic number.

28797448680 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 28797448680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63355219200).

28797448680 is an abundant number, since it is smaller than the sum of its proper divisors (97912989720).

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

28797448680 is a wasteful number, since it uses less digits than its factorization.

28797448680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714 (or 707 counting only the distinct ones).

The product of its (nonzero) digits is 43352064, while the sum is 63.

The spelling of 28797448680 in words is "twenty-eight billion, seven hundred ninety-seven million, four hundred forty-eight thousand, six hundred eighty".