198630312 has 32 divisors (see below), whose sum is σ = 525787200. Its totient is φ = 62315264.

The previous prime is 198630307. The next prime is 198630343. The reversal of 198630312 is 213036891.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243012 + ... + 243827.

It is an arithmetic number, because the mean of its divisors is an integer number (16430850).

Almost surely, 2^198630312 is an apocalyptic number.

198630312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

198630312 is an abundant number, since it is smaller than the sum of its proper divisors (327156888).

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

198630312 is a wasteful number, since it uses less digits than its factorization.

198630312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486865 (or 486861 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 198630312 is about 14093.6266446930. The cubic root of 198630312 is about 583.4654911087.

The spelling of 198630312 in words is "one hundred ninety-eight million, six hundred thirty thousand, three hundred twelve".