198216270 has 96 divisors (see below), whose sum is σ = 601099200. Its totient is φ = 45299520.

The previous prime is 198216257. The next prime is 198216281. The reversal of 198216270 is 72612891.

198216270 is a `hidden beast` number, since 1 + 9 + 8 + 21 + 627 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 27660 + ... + 34080.

It is an arithmetic number, because the mean of its divisors is an integer number (6261450).

Almost surely, 2^198216270 is an apocalyptic number.

198216270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 198216270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300549600).

198216270 is an abundant number, since it is smaller than the sum of its proper divisors (402882930).

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

198216270 is a wasteful number, since it uses less digits than its factorization.

198216270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6455 (or 6438 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 198216270 is about 14078.9300019568. The cubic root of 198216270 is about 583.0598006459.

The spelling of 198216270 in words is "one hundred ninety-eight million, two hundred sixteen thousand, two hundred seventy".