| Base | Representation |
|---|---|
| bin | 111011011111111… |
| … | …000100011011010 |
| 3 | 2120120022111222100 |
| 4 | 323133320203122 |
| 5 | 4021020320400 |
| 6 | 243015104230 |
| 7 | 33510451314 |
| oct | 7337704332 |
| 9 | 2516274870 |
| 10 | 998213850 |
| 11 | 472513927 |
| 12 | 23a372076 |
| 13 | 12ba631aa |
| 14 | 968047b4 |
| 15 | 5c97c100 |
| hex | 3b7f88da |
998213850 has 144 divisors (see below), whose sum is σ = 2750716800. Its totient is φ = 259459200.
The previous prime is 998213833. The next prime is 998213851. The reversal of 998213850 is 58312899.
It is a happy number.
It is a Harshad number since it is a multiple of its sum of digits (45).
It is a Curzon number.
It is a junction number, because it is equal to n+sod(n) for n = 998213796 and 998213805.
It is not an unprimeable number, because it can be changed into a prime (998213851) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5016051 + ... + 5016249.
It is an arithmetic number, because the mean of its divisors is an integer number (19102200).
Almost surely, 2998213850 is an apocalyptic number.
998213850 is a gapful number since it is divisible by the number (90) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 998213850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1375358400).
998213850 is an abundant number, since it is smaller than the sum of its proper divisors (1752502950).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
998213850 is a wasteful number, since it uses less digits than its factorization.
998213850 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 445 (or 437 counting only the distinct ones).
The product of its (nonzero) digits is 155520, while the sum is 45.
The square root of 998213850 is about 31594.5224683014. The cubic root of 998213850 is about 999.4042618332.
It can be divided in two parts, 9982 and 13850, that added together give a palindrome (23832).
The spelling of 998213850 in words is "nine hundred ninety-eight million, two hundred thirteen thousand, eight hundred fifty".
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