198969120 has 144 divisors (see below), whose sum is σ = 776018880. Its totient is φ = 45476352.

The previous prime is 198969107. The next prime is 198969131. The reversal of 198969120 is 21969891.

198969120 is digitally balanced in base 3, 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 (144).

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 211 + ... + 19949.

It is an arithmetic number, because the mean of its divisors is an integer number (5389020).

Almost surely, 2^198969120 is an apocalyptic number.

198969120 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 198969120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (388009440).

198969120 is an abundant number, since it is smaller than the sum of its proper divisors (577049760).

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

198969120 is a wasteful number, since it uses less digits than its factorization.

198969120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19767 (or 19756 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 45.

The square root of 198969120 is about 14105.6414246216. The cubic root of 198969120 is about 583.7970458838.

The spelling of 198969120 in words is "one hundred ninety-eight million, nine hundred sixty-nine thousand, one hundred twenty".