28988858790 has 192 divisors, whose sum is σ = 81820627200. Its totient is φ = 7096004352.

The previous prime is 28988858783. The next prime is 28988858791. The reversal of 28988858790 is 9785888982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28988858791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 17904601 + ... + 17906219.

It is an arithmetic number, because the mean of its divisors is an integer number (426149100).

Almost surely, 2^28988858790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28988858790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40910313600).

28988858790 is an abundant number, since it is smaller than the sum of its proper divisors (52831768410).

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

28988858790 is a wasteful number, since it uses less digits than its factorization.

28988858790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971 (or 1968 counting only the distinct ones).

The product of its (nonzero) digits is 185794560, while the sum is 72.

It can be divided in two parts, 28988 and 858790, that added together give a triangular number (887778 = T₁₃₃₂).

The spelling of 28988858790 in words is "twenty-eight billion, nine hundred eighty-eight million, eight hundred fifty-eight thousand, seven hundred ninety".