198042880 has 216 divisors, whose sum is σ = 584551296. Its totient is φ = 62853120.

The previous prime is 198042851. The next prime is 198042883. The reversal of 198042880 is 88240891.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198042883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6388465 + ... + 6388495.

It is an arithmetic number, because the mean of its divisors is an integer number (2706256).

Almost surely, 2^198042880 is an apocalyptic number.

198042880 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 198042880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292275648).

198042880 is an abundant number, since it is smaller than the sum of its proper divisors (386508416).

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

198042880 is an equidigital number, since it uses as much as digits as its factorization.

198042880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 198042880 is about 14072.7708714382. The cubic root of 198042880 is about 582.8897402175.

The spelling of 198042880 in words is "one hundred ninety-eight million, forty-two thousand, eight hundred eighty".