28830488991 has 16 divisors (see below), whose sum is σ = 38937650400. Its totient is φ = 18973139328.

The previous prime is 28830488927. The next prime is 28830489001. The reversal of 28830488991 is 19988403882.

It is not a de Polignac number, because 28830488991 - 2⁶ = 28830488927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28830488191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75916 + ... + 251841.

It is an arithmetic number, because the mean of its divisors is an integer number (2433603150).

Almost surely, 2^28830488991 is an apocalyptic number.

28830488991 is a deficient number, since it is larger than the sum of its proper divisors (10107161409).

28830488991 is a wasteful number, since it uses less digits than its factorization.

28830488991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328138.

The product of its (nonzero) digits is 7962624, while the sum is 60.

The spelling of 28830488991 in words is "twenty-eight billion, eight hundred thirty million, four hundred eighty-eight thousand, nine hundred ninety-one".