8128998 has 60 divisors (see below), whose sum is σ = 19362420. Its totient is φ = 2548584.

The previous prime is 8128969. The next prime is 8129027. The reversal of 8128998 is 8998218.

8128998 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8128969) and next prime (8129027).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 58413 + ... + 58551.

It is an arithmetic number, because the mean of its divisors is an integer number (322707).

Almost surely, 2^8128998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8128998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9681210).

8128998 is an abundant number, since it is smaller than the sum of its proper divisors (11233422).

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

8128998 is a wasteful number, since it uses less digits than its factorization.

8128998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 163 counting only the distinct ones).

The product of its digits is 82944, while the sum is 45.

The square root of 8128998 is about 2851.1397720912. The cubic root of 8128998 is about 201.0692565975.

The spelling of 8128998 in words is "eight million, one hundred twenty-eight thousand, nine hundred ninety-eight".