198055944 has 96 divisors (see below), whose sum is σ = 563472000. Its totient is φ = 62726400.

The previous prime is 198055939. The next prime is 198055951. The reversal of 198055944 is 449550891.

198055944 is a `hidden beast` number, since 1 + 98 + 0 + 559 + 4 + 4 = 666.

It is a super-2 number, since 2×198055944² = 78452313907462272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 198055944.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 329244 + ... + 329844.

It is an arithmetic number, because the mean of its divisors is an integer number (5869500).

Almost surely, 2^198055944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198055944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281736000).

198055944 is an abundant number, since it is smaller than the sum of its proper divisors (365416056).

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

198055944 is a wasteful number, since it uses less digits than its factorization.

198055944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835 (or 828 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 198055944 is about 14073.2350225526. The cubic root of 198055944 is about 582.9025568091.

The spelling of 198055944 in words is "one hundred ninety-eight million, fifty-five thousand, nine hundred forty-four".