198634960 has 20 divisors (see below), whose sum is σ = 461826468. Its totient is φ = 79453952.

The previous prime is 198634939. The next prime is 198634963. The reversal of 198634960 is 69436891.

It can be written as a sum of positive squares in 2 ways, for example, as 77018176 + 121616784 = 8776^2 + 11028^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 198634960.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198634963) 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 3 ways as a sum of consecutive naturals, for example, 1241389 + ... + 1241548.

Almost surely, 2^198634960 is an apocalyptic number.

198634960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198634960 is an abundant number, since it is smaller than the sum of its proper divisors (263191508).

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

198634960 is a wasteful number, since it uses less digits than its factorization.

198634960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2482950 (or 2482944 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 198634960 is about 14093.7915409587. The cubic root of 198634960 is about 583.4700421537.

The spelling of 198634960 in words is "one hundred ninety-eight million, six hundred thirty-four thousand, nine hundred sixty".