198630270 has 48 divisors (see below), whose sum is σ = 521035632. Its totient is φ = 52496640.

The previous prime is 198630269. The next prime is 198630293. The reversal of 198630270 is 72036891.

198630270 is a `hidden beast` number, since 19 + 8 + 630 + 2 + 7 + 0 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 405 + ... + 19935.

It is an arithmetic number, because the mean of its divisors is an integer number (10854909).

Almost surely, 2^198630270 is an apocalyptic number.

198630270 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 198630270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260517816).

198630270 is an abundant number, since it is smaller than the sum of its proper divisors (322405362).

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

198630270 is a wasteful number, since it uses less digits than its factorization.

198630270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19657 (or 19654 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 198630270 is about 14093.6251546577. The cubic root of 198630270 is about 583.4654499845.

The spelling of 198630270 in words is "one hundred ninety-eight million, six hundred thirty thousand, two hundred seventy".