198404880 has 80 divisors (see below), whose sum is σ = 616835520. Its totient is φ = 52754944.

The previous prime is 198404873. The next prime is 198404887. The reversal of 198404880 is 88404891.

198404880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (198404873) and next prime (198404887).

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (198404887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99574 + ... + 101546.

It is an arithmetic number, because the mean of its divisors is an integer number (7710444).

Almost surely, 2^198404880 is an apocalyptic number.

198404880 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 198404880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308417760).

198404880 is an abundant number, since it is smaller than the sum of its proper divisors (418430640).

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

198404880 is a wasteful number, since it uses less digits than its factorization.

198404880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2408 (or 2402 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 198404880 is about 14085.6267166215. The cubic root of 198404880 is about 583.2446762315.

The spelling of 198404880 in words is "one hundred ninety-eight million, four hundred four thousand, eight hundred eighty".