198306620 has 12 divisors (see below), whose sum is σ = 416443944. Its totient is φ = 79322640.

The previous prime is 198306599. The next prime is 198306653. The reversal of 198306620 is 26603891.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4957646 + ... + 4957685.

It is an arithmetic number, because the mean of its divisors is an integer number (34703662).

Almost surely, 2^198306620 is an apocalyptic number.

198306620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198306620 is an abundant number, since it is smaller than the sum of its proper divisors (218137324).

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

198306620 is a wasteful number, since it uses less digits than its factorization.

198306620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9915340 (or 9915338 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 198306620 is about 14082.1383319438. The cubic root of 198306620 is about 583.1483763734.

The spelling of 198306620 in words is "one hundred ninety-eight million, three hundred six thousand, six hundred twenty".