198086280 has 128 divisors (see below), whose sum is σ = 701153280. Its totient is φ = 43810560.

The previous prime is 198086209. The next prime is 198086297. The reversal of 198086280 is 82680891.

198086280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22237 + ... + 29843.

It is an arithmetic number, because the mean of its divisors is an integer number (5477760).

Almost surely, 2^198086280 is an apocalyptic number.

198086280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198086280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350576640).

198086280 is an abundant number, since it is smaller than the sum of its proper divisors (503067000).

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

198086280 is a wasteful number, since it uses less digits than its factorization.

198086280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7659 (or 7655 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 198086280 is about 14074.3127718550. The cubic root of 198086280 is about 582.9323161267.

The spelling of 198086280 in words is "one hundred ninety-eight million, eighty-six thousand, two hundred eighty".