Base | Representation |
---|---|
bin | 100100101011111… |
… | …0110101110010110 |
3 | 10011210022210010202 |
4 | 1021113312232112 |
5 | 10010113141410 |
6 | 322052220502 |
7 | 42335146541 |
oct | 11127665626 |
9 | 3153283122 |
10 | 1230990230 |
11 | 5819531a8 |
12 | 2a430a732 |
13 | 1680550b2 |
14 | b96b9858 |
15 | 7310cca5 |
hex | 495f6b96 |
1230990230 has 32 divisors (see below), whose sum is σ = 2353193856. Its totient is φ = 462034944.
The previous prime is 1230990209. The next prime is 1230990269. The reversal of 1230990230 is 320990321.
It is a junction number, because it is equal to n+sod(n) for n = 1230990193 and 1230990202.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46547 + ... + 68033.
It is an arithmetic number, because the mean of its divisors is an integer number (73537308).
Almost surely, 21230990230 is an apocalyptic number.
1230990230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
1230990230 is a deficient number, since it is larger than the sum of its proper divisors (1122203626).
1230990230 is a wasteful number, since it uses less digits than its factorization.
1230990230 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 21848.
The product of its (nonzero) digits is 2916, while the sum is 29.
The square root of 1230990230 is about 35085.4703545499. The cubic root of 1230990230 is about 1071.7287192025.
Subtracting from 1230990230 its reverse (320990321), we obtain a palindrome (909999909).
The spelling of 1230990230 in words is "one billion, two hundred thirty million, nine hundred ninety thousand, two hundred thirty".
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