198724980 has 96 divisors (see below), whose sum is σ = 574358400. Its totient is φ = 51314688.

The previous prime is 198724979. The next prime is 198725017. The reversal of 198724980 is 89427891.

It is a congruent number.

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, 258036 + ... + 258804.

It is an arithmetic number, because the mean of its divisors is an integer number (5982900).

Almost surely, 2^198724980 is an apocalyptic number.

198724980 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 198724980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287179200).

198724980 is an abundant number, since it is smaller than the sum of its proper divisors (375633420).

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

198724980 is a wasteful number, since it uses less digits than its factorization.

198724980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913 (or 911 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 198724980 is about 14096.9847839884. The cubic root of 198724980 is about 583.5581703810.

The spelling of 198724980 in words is "one hundred ninety-eight million, seven hundred twenty-four thousand, nine hundred eighty".