Base | Representation |
---|---|
bin | 11011100000110… |
… | …00001110111100 |
3 | 121002021010211220 |
4 | 31300120032330 |
5 | 433040122410 |
6 | 34522313340 |
7 | 5501435265 |
oct | 1560301674 |
9 | 532233756 |
10 | 230785980 |
11 | 1092aaa17 |
12 | 65358850 |
13 | 38a75c69 |
14 | 2291796c |
15 | 153db070 |
hex | dc183bc |
230785980 has 48 divisors (see below), whose sum is σ = 659957760. Its totient is φ = 60232768.
The previous prime is 230785949. The next prime is 230785981. The reversal of 230785980 is 89587032.
230785980 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (230785981) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38100 + ... + 43739.
It is an arithmetic number, because the mean of its divisors is an integer number (13749120).
Almost surely, 2230785980 is an apocalyptic number.
230785980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
230785980 is an abundant number, since it is smaller than the sum of its proper divisors (429171780).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
230785980 is a wasteful number, since it uses less digits than its factorization.
230785980 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 81898 (or 81896 counting only the distinct ones).
The product of its (nonzero) digits is 120960, while the sum is 42.
The square root of 230785980 is about 15191.6417809268. The cubic root of 230785980 is about 613.3896930198.
The spelling of 230785980 in words is "two hundred thirty million, seven hundred eighty-five thousand, nine hundred eighty".
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