Base | Representation |
---|---|
bin | 11101001001100… |
… | …000010011100101 |
3 | 1021002012100021000 |
4 | 131021200103211 |
5 | 2000142442020 |
6 | 120305343513 |
7 | 15055460010 |
oct | 3511402345 |
9 | 1232170230 |
10 | 489030885 |
11 | 231055162 |
12 | 117937b99 |
13 | 7a4143b5 |
14 | 48d3c377 |
15 | 2cded090 |
hex | 1d2604e5 |
489030885 has 64 divisors (see below), whose sum is σ = 998300160. Its totient is φ = 222497280.
The previous prime is 489030863. The next prime is 489030929. The reversal of 489030885 is 588030984.
It is not a de Polignac number, because 489030885 - 27 = 489030757 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (45).
It is a Curzon number.
It is a self number, because there is not a number n which added to its sum of digits gives 489030885.
It is a congruent number.
It is an unprimeable number.
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 63 ways as a sum of consecutive naturals, for example, 219075 + ... + 221295.
It is an arithmetic number, because the mean of its divisors is an integer number (15598440).
Almost surely, 2489030885 is an apocalyptic number.
489030885 is a gapful number since it is divisible by the number (45) formed by its first and last digit.
It is an amenable number.
489030885 is an abundant number, since it is smaller than the sum of its proper divisors (509269275).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
489030885 is a wasteful number, since it uses less digits than its factorization.
489030885 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2475 (or 2469 counting only the distinct ones).
The product of its (nonzero) digits is 276480, while the sum is 45.
The square root of 489030885 is about 22114.0427104589. The cubic root of 489030885 is about 787.8534286597.
Subtracting 489030885 from its reverse (588030984), we obtain a palindrome (99000099).
The spelling of 489030885 in words is "four hundred eighty-nine million, thirty thousand, eight hundred eighty-five".
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