198982020 has 96 divisors (see below), whose sum is σ = 583220736. Its totient is φ = 50636800.

The previous prime is 198981997. The next prime is 198982031. The reversal of 198982020 is 20289891.

198982020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 198982020.

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, 114760 + ... + 116480.

It is an arithmetic number, because the mean of its divisors is an integer number (6075216).

Almost surely, 2^198982020 is an apocalyptic number.

198982020 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 198982020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291610368).

198982020 is an abundant number, since it is smaller than the sum of its proper divisors (384238716).

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

198982020 is a wasteful number, since it uses less digits than its factorization.

198982020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821 (or 1819 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 198982020 is about 14106.0986810670. The cubic root of 198982020 is about 583.8096622790.

The spelling of 198982020 in words is "one hundred ninety-eight million, nine hundred eighty-two thousand, twenty".