198412452 has 72 divisors (see below), whose sum is σ = 574531776. Its totient is φ = 56556864.

The previous prime is 198412447. The next prime is 198412453. The reversal of 198412452 is 254214891.

198412452 is a `hidden beast` number, since 198 + 4 + 12 + 452 = 666.

It is a super-2 number, since 2×198412452² = 78735002217304608, which contains 22 as substring.

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 (198412453) 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, 170023 + ... + 171185.

It is an arithmetic number, because the mean of its divisors is an integer number (7979608).

Almost surely, 2^198412452 is an apocalyptic number.

198412452 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 198412452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287265888).

198412452 is an abundant number, since it is smaller than the sum of its proper divisors (376119324).

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

198412452 is a wasteful number, since it uses less digits than its factorization.

198412452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1857 (or 1852 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 198412452 is about 14085.8954986895. The cubic root of 198412452 is about 583.2520958617.

The spelling of 198412452 in words is "one hundred ninety-eight million, four hundred twelve thousand, four hundred fifty-two".