198908712 has 96 divisors (see below), whose sum is σ = 565044480. Its totient is φ = 63141120.

The previous prime is 198908657. The next prime is 198908719. The reversal of 198908712 is 217809891.

It is not an unprimeable number, because it can be changed into a prime (198908719) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126153 + ... + 127719.

It is an arithmetic number, because the mean of its divisors is an integer number (5885880).

Almost surely, 2^198908712 is an apocalyptic number.

198908712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is a pronic number, being equal to 14103×14104.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198908712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282522240).

198908712 is an abundant number, since it is smaller than the sum of its proper divisors (366135768).

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

198908712 is a wasteful number, since it uses less digits than its factorization.

198908712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1663 (or 1656 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 45.

The square root of 198908712 is about 14103.4999911370. The cubic root of 198908712 is about 583.7379586889.

The spelling of 198908712 in words is "one hundred ninety-eight million, nine hundred eight thousand, seven hundred twelve".