| Base | Representation |
|---|---|
| bin | 10111100111110… |
| … | …10000110000000 |
| 3 | 111210212101212000 |
| 4 | 23303322012000 |
| 5 | 401212003142 |
| 6 | 31355104000 |
| 7 | 4624206150 |
| oct | 1363720600 |
| 9 | 453771760 |
| 10 | 198156672 |
| 11 | a194404a |
| 12 | 56442000 |
| 13 | 3209028c |
| 14 | 1c462760 |
| 15 | 125e314c |
| hex | bcfa180 |
198156672 has 128 divisors (see below), whose sum is σ = 668467200. Its totient is φ = 56609280.
The previous prime is 198156671. The next prime is 198156683. The reversal of 198156672 is 276651891.
198156672 is a `hidden beast` number, since 1 + 9 + 81 + 566 + 7 + 2 = 666.
It is a tau number, because it is divible by the number of its divisors (128).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (198156671) 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 15 ways as a sum of consecutive naturals, for example, 20097 + ... + 28287.
It is an arithmetic number, because the mean of its divisors is an integer number (5222400).
Almost surely, 2198156672 is an apocalyptic number.
198156672 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 198156672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (334233600).
198156672 is an abundant number, since it is smaller than the sum of its proper divisors (470310528).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
198156672 is an equidigital number, since it uses as much as digits as its factorization.
198156672 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 8221 (or 8203 counting only the distinct ones).
The product of its digits is 181440, while the sum is 45.
The square root of 198156672 is about 14076.8132757382. The cubic root of 198156672 is about 583.0013582834.
It can be divided in two parts, 1981 and 56672, that added together give a triangular number (58653 = T342).
The spelling of 198156672 in words is "one hundred ninety-eight million, one hundred fifty-six thousand, six hundred seventy-two".
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