9198128 has 40 divisors (see below), whose sum is σ = 19046400. Its totient is φ = 4290624.

The previous prime is 9198113. The next prime is 9198151. The reversal of 9198128 is 8218919.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 9198091 and 9198100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23825 + ... + 24207.

It is an arithmetic number, because the mean of its divisors is an integer number (476160).

Almost surely, 2^9198128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9198128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9523200).

9198128 is an abundant number, since it is smaller than the sum of its proper divisors (9848272).

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

9198128 is a wasteful number, since it uses less digits than its factorization.

9198128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489 (or 483 counting only the distinct ones).

The product of its digits is 10368, while the sum is 38.

The square root of 9198128 is about 3032.8415718596. The cubic root of 9198128 is about 209.5236975337.

The spelling of 9198128 in words is "nine million, one hundred ninety-eight thousand, one hundred twenty-eight".