198059920 has 40 divisors (see below), whose sum is σ = 463095360. Its totient is φ = 78775680.

The previous prime is 198059893. The next prime is 198059921. The reversal of 198059920 is 29950891.

198059920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (198059921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7405 + ... + 21235.

It is an arithmetic number, because the mean of its divisors is an integer number (11577384).

Almost surely, 2^198059920 is an apocalyptic number.

198059920 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 198059920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231547680).

198059920 is an abundant number, since it is smaller than the sum of its proper divisors (265035440).

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

198059920 is a wasteful number, since it uses less digits than its factorization.

198059920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14023 (or 14017 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 43.

The square root of 198059920 is about 14073.3762828967. The cubic root of 198059920 is about 582.9064573990.

The spelling of 198059920 in words is "one hundred ninety-eight million, fifty-nine thousand, nine hundred twenty".