198806026 has 8 divisors (see below), whose sum is σ = 298309284. Its totient is φ = 99369600.

The previous prime is 198806017. The next prime is 198806029. The reversal of 198806026 is 620608891.

It can be written as a sum of positive squares in 2 ways, for example, as 196700625 + 2105401 = 14025^2 + 1451^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 198806026.

It is not an unprimeable number, because it can be changed into a prime (198806029) 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 3 ways as a sum of consecutive naturals, for example, 8455 + ... + 21658.

Almost surely, 2^198806026 is an apocalyptic number.

198806026 is a deficient number, since it is larger than the sum of its proper divisors (99503258).

198806026 is a wasteful number, since it uses less digits than its factorization.

198806026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33416.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 198806026 is about 14099.8590773100. The cubic root of 198806026 is about 583.6374904334.

The spelling of 198806026 in words is "one hundred ninety-eight million, eight hundred six thousand, twenty-six".