198928210 has 24 divisors (see below), whose sum is σ = 387736740. Its totient is φ = 73449792.

The previous prime is 198928207. The next prime is 198928217. The reversal of 198928210 is 12829891.

It can be written as a sum of positive squares in 6 ways, for example, as 14538969 + 184389241 = 3813^2 + 13579^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (198928217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57165 + ... + 60544.

Almost surely, 2^198928210 is an apocalyptic number.

198928210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198928210 is a deficient number, since it is larger than the sum of its proper divisors (188808530).

198928210 is a wasteful number, since it uses less digits than its factorization.

198928210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117742 (or 117729 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 198928210 is about 14104.1912210520. The cubic root of 198928210 is about 583.7570316776.

The spelling of 198928210 in words is "one hundred ninety-eight million, nine hundred twenty-eight thousand, two hundred ten".