198823550 has 24 divisors (see below), whose sum is σ = 373482792. Its totient is φ = 78740000.

The previous prime is 198823531. The next prime is 198823561. The reversal of 198823550 is 55328891.

It is a junction number, because it is equal to n+sod(n) for n = 198823498 and 198823507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14636 + ... + 24735.

It is an arithmetic number, because the mean of its divisors is an integer number (15561783).

Almost surely, 2^198823550 is an apocalyptic number.

198823550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198823550 is a deficient number, since it is larger than the sum of its proper divisors (174659242).

198823550 is a wasteful number, since it uses less digits than its factorization.

198823550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39484 (or 39479 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 41.

The square root of 198823550 is about 14100.4804882671. The cubic root of 198823550 is about 583.6546384094.

It can be divided in two parts, 19882 and 3550, that added together give a palindrome (23432).

The spelling of 198823550 in words is "one hundred ninety-eight million, eight hundred twenty-three thousand, five hundred fifty".