28313738706 has 128 divisors (see below), whose sum is σ = 66189312000. Its totient is φ = 7984215360.

The previous prime is 28313738699. The next prime is 28313738707. The reversal of 28313738706 is 60783731382.

It is not an unprimeable number, because it can be changed into a prime (28313738707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20711635 + ... + 20713001.

It is an arithmetic number, because the mean of its divisors is an integer number (517104000).

Almost surely, 2^28313738706 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28313738706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33094656000).

28313738706 is an abundant number, since it is smaller than the sum of its proper divisors (37875573294).

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

28313738706 is a wasteful number, since it uses less digits than its factorization.

28313738706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1684.

The product of its (nonzero) digits is 1016064, while the sum is 48.

The spelling of 28313738706 in words is "twenty-eight billion, three hundred thirteen million, seven hundred thirty-eight thousand, seven hundred six".