198450612 has 36 divisors (see below), whose sum is σ = 502547136. Its totient is φ = 66030480.

The previous prime is 198450563. The next prime is 198450617. The reversal of 198450612 is 216054891.

198450612 is a `hidden beast` number, since 198 + 450 + 6 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198450617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16437 + ... + 25827.

Almost surely, 2^198450612 is an apocalyptic number.

198450612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

198450612 is the 7044-th decagonal number.

It is an amenable number.

198450612 is an abundant number, since it is smaller than the sum of its proper divisors (304096524).

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

198450612 is a wasteful number, since it uses less digits than its factorization.

198450612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9988 (or 9983 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 198450612 is about 14087.2499800351. The cubic root of 198450612 is about 583.2894851032.

The spelling of 198450612 in words is "one hundred ninety-eight million, four hundred fifty thousand, six hundred twelve".