| Base | Representation |
|---|---|
| bin | 11110011101001110000 |
| 3 | 1212200222222 |
| 4 | 3303221300 |
| 5 | 223414000 |
| 6 | 33220212 |
| 7 | 11324423 |
| oct | 3635160 |
| 9 | 1780888 |
| 10 | 998000 |
| 11 | 6218a3 |
| 12 | 401668 |
| 13 | 28c343 |
| 14 | 1bd9ba |
| 15 | 14aa85 |
| hex | f3a70 |
998000 has 40 divisors (see below), whose sum is σ = 2418000. Its totient is φ = 398400.
The previous prime is 997991. The next prime is 998009. The reversal of 998000 is 899.
It is a happy number.
It is a Cunningham number, because it is equal to 9992-1.
It is an interprime number because it is at equal distance from previous prime (997991) and next prime (998009).
It is a tau number, because it is divible by the number of its divisors (40).
It is a nialpdrome in base 10.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (998009) by changing a digit.
998000 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1751 + ... + 2249.
It is an arithmetic number, because the mean of its divisors is an integer number (60450).
2998000 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 998000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1209000).
998000 is an abundant number, since it is smaller than the sum of its proper divisors (1420000).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
998000 is a wasteful number, since it uses less digits than its factorization.
998000 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 522 (or 506 counting only the distinct ones).
The product of its (nonzero) digits is 648, while the sum is 26.
The square root of 998000 is about 998.9994994994. Note that the first 3 decimals coincide. The cubic root of 998000 is about 99.9332888394.
Adding to 998000 its reverse (899), we get a palindrome (998899).
The spelling of 998000 in words is "nine hundred ninety-eight thousand".
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