198058212 has 72 divisors (see below), whose sum is σ = 547878240. Its totient is φ = 59829120.

The previous prime is 198058171. The next prime is 198058213. The reversal of 198058212 is 212850891.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (198058213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 174864 + ... + 175992.

It is an arithmetic number, because the mean of its divisors is an integer number (7609420).

Almost surely, 2^198058212 is an apocalyptic number.

198058212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198058212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273939120).

198058212 is an abundant number, since it is smaller than the sum of its proper divisors (349820028).

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

198058212 is a wasteful number, since it uses less digits than its factorization.

198058212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1593 (or 1588 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 198058212 is about 14073.3156008099. The cubic root of 198058212 is about 582.9047817999.

The spelling of 198058212 in words is "one hundred ninety-eight million, fifty-eight thousand, two hundred twelve".