198128230 has 8 divisors (see below), whose sum is σ = 356630832. Its totient is φ = 79251288.

The previous prime is 198128213. The next prime is 198128263. The reversal of 198128230 is 32821891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×198128230³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9906402 + ... + 9906421.

It is an arithmetic number, because the mean of its divisors is an integer number (44578854).

Almost surely, 2^198128230 is an apocalyptic number.

198128230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198128230 is a deficient number, since it is larger than the sum of its proper divisors (158502602).

198128230 is a wasteful number, since it uses less digits than its factorization.

198128230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19812830.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 198128230 is about 14075.8029966322. The cubic root of 198128230 is about 582.9734636586.

The spelling of 198128230 in words is "one hundred ninety-eight million, one hundred twenty-eight thousand, two hundred thirty".