198434115 has 48 divisors (see below), whose sum is σ = 397309536. Its totient is φ = 90547200.

The previous prime is 198434113. The next prime is 198434129. The reversal of 198434115 is 511434891.

It is not a de Polignac number, because 198434115 - 2¹ = 198434113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 198434115.

It is not an unprimeable number, because it can be changed into a prime (198434111) 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 47 ways as a sum of consecutive naturals, for example, 3376 + ... + 20205.

It is an arithmetic number, because the mean of its divisors is an integer number (8277282).

Almost surely, 2^198434115 is an apocalyptic number.

198434115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

198434115 is an abundant number, since it is smaller than the sum of its proper divisors (198875421).

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

198434115 is a wasteful number, since it uses less digits than its factorization.

198434115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23620 (or 23617 counting only the distinct ones).

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

The square root of 198434115 is about 14086.6644383970. The cubic root of 198434115 is about 583.2733218990.

The spelling of 198434115 in words is "one hundred ninety-eight million, four hundred thirty-four thousand, one hundred fifteen".