Base | Representation |
---|---|
bin | 11011011101110… |
… | …00001001011001 |
3 | 121001112010222012 |
4 | 31232320021121 |
5 | 432440024114 |
6 | 34510035305 |
7 | 5465205662 |
oct | 1556701131 |
9 | 531463865 |
10 | 230392409 |
11 | 109061255 |
12 | 651a8b35 |
13 | 38968a90 |
14 | 22854369 |
15 | 1535e63e |
hex | dbb8259 |
230392409 has 16 divisors (see below), whose sum is σ = 254846592. Its totient is φ = 206938368.
The previous prime is 230392397. The next prime is 230392411. The reversal of 230392409 is 904293032.
It is a de Polignac number, because none of the positive numbers 2k-230392409 is a prime.
It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is not an unprimeable number, because it can be changed into a prime (230392469) 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, 187772 + ... + 188994.
It is an arithmetic number, because the mean of its divisors is an integer number (15927912).
Almost surely, 2230392409 is an apocalyptic number.
It is an amenable number.
230392409 is a deficient number, since it is larger than the sum of its proper divisors (24454183).
230392409 is a wasteful number, since it uses less digits than its factorization.
230392409 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1616.
The product of its (nonzero) digits is 11664, while the sum is 32.
The square root of 230392409 is about 15178.6827162307. The cubic root of 230392409 is about 613.0408131385.
The spelling of 230392409 in words is "two hundred thirty million, three hundred ninety-two thousand, four hundred nine".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.079 sec. • engine limits •