198128132 has 48 divisors (see below), whose sum is σ = 375943680. Its totient is φ = 91026432.

The previous prime is 198128123. The next prime is 198128137. The reversal of 198128132 is 231821891.

It is a super-3 number, since 3×198128132³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 198128092 and 198128101.

It is not an unprimeable number, because it can be changed into a prime (198128137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 828869 + ... + 829107.

It is an arithmetic number, because the mean of its divisors is an integer number (7832160).

Almost surely, 2^198128132 is an apocalyptic number.

It is an amenable number.

198128132 is a deficient number, since it is larger than the sum of its proper divisors (177815548).

198128132 is a wasteful number, since it uses less digits than its factorization.

198128132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500 (or 498 counting only the distinct ones).

The product of its digits is 6912, while the sum is 35.

The square root of 198128132 is about 14075.7995154805. The cubic root of 198128132 is about 582.9733675401.

The spelling of 198128132 in words is "one hundred ninety-eight million, one hundred twenty-eight thousand, one hundred thirty-two".