198117852 has 12 divisors (see below), whose sum is σ = 462275016. Its totient is φ = 66039280.

The previous prime is 198117823. The next prime is 198117853. The reversal of 198117852 is 258711891.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198117853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8254899 + ... + 8254922.

It is an arithmetic number, because the mean of its divisors is an integer number (38522918).

Almost surely, 2^198117852 is an apocalyptic number.

198117852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

198117852 is an abundant number, since it is smaller than the sum of its proper divisors (264157164).

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

198117852 is a wasteful number, since it uses less digits than its factorization.

198117852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16509828 (or 16509826 counting only the distinct ones).

The product of its digits is 40320, while the sum is 42.

The square root of 198117852 is about 14075.4343449856. The cubic root of 198117852 is about 582.9632847218.

It can be divided in two parts, 198 and 117852, that multiplied together give a triangular number (23334696 = T₆₈₃₁).

The spelling of 198117852 in words is "one hundred ninety-eight million, one hundred seventeen thousand, eight hundred fifty-two".