28666816008480 has 768 divisors, whose sum is σ = 116812966233600. Its totient is φ = 6504368947200.

The previous prime is 28666816008409. The next prime is 28666816008487. The reversal of 28666816008480 is 8480061866682.

It is not an unprimeable number, because it can be changed into a prime (28666816008487) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 39117430 + ... + 39843530.

It is an arithmetic number, because the mean of its divisors is an integer number (152100216450).

Almost surely, 2^{28666816008480} is an apocalyptic number.

28666816008480 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 28666816008480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58406483116800).

28666816008480 is an abundant number, since it is smaller than the sum of its proper divisors (88146150225120).

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

28666816008480 is a wasteful number, since it uses less digits than its factorization.

28666816008480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726194 (or 726180 counting only the distinct ones).

The product of its (nonzero) digits is 42467328, while the sum is 63.

The spelling of 28666816008480 in words is "twenty-eight trillion, six hundred sixty-six billion, eight hundred sixteen million, eight thousand, four hundred eighty".