28988858694 has 128 divisors (see below), whose sum is σ = 66154475520. Its totient is φ = 8422502400.

The previous prime is 28988858683. The next prime is 28988858707. The reversal of 28988858694 is 49685888982.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6868917 + ... + 6873135.

It is an arithmetic number, because the mean of its divisors is an integer number (516831840).

Almost surely, 2^28988858694 is an apocalyptic number.

28988858694 is an abundant number, since it is smaller than the sum of its proper divisors (37165616826).

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

28988858694 is a wasteful number, since it uses less digits than its factorization.

28988858694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4366.

The product of its digits is 637009920, while the sum is 75.

The spelling of 28988858694 in words is "twenty-eight billion, nine hundred eighty-eight million, eight hundred fifty-eight thousand, six hundred ninety-four".