28112648704 has 80 divisors (see below), whose sum is σ = 65687992128. Its totient is φ = 11768020992.

The previous prime is 28112648701. The next prime is 28112648731. The reversal of 28112648704 is 40784621182.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (28112648701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62904 + ... + 245320.

Almost surely, 2^28112648704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28112648704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32843996064).

28112648704 is an abundant number, since it is smaller than the sum of its proper divisors (37575343424).

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

28112648704 is an equidigital number, since it uses as much as digits as its factorization.

28112648704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182485 (or 182469 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 43.

The spelling of 28112648704 in words is "twenty-eight billion, one hundred twelve million, six hundred forty-eight thousand, seven hundred four".