Base | Representation |
---|---|
bin | 111010101100… |
… | …0000001001110 |
3 | 2010220020110010 |
4 | 1311120001032 |
5 | 30334103410 |
6 | 3015254050 |
7 | 522351132 |
oct | 165300116 |
9 | 63806403 |
10 | 30769230 |
11 | 16406418 |
12 | a37a326 |
13 | 64b415b |
14 | 412d3c2 |
15 | 2a7bc20 |
hex | 1d5804e |
30769230 has 16 divisors (see below), whose sum is σ = 73846224. Its totient is φ = 8205120.
The previous prime is 30769223. The next prime is 30769243. The reversal of 30769230 is 3296703.
It is a happy number.
It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 1025641 = 30769230 / (3 + 0 + 7 + 6 + 9 + 2 + 3 + 0).
It is an alternating number because its digits alternate between odd and even.
30769230 is a modest number, since divided by 769230 gives 30 as remainder.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 512791 + ... + 512850.
It is an arithmetic number, because the mean of its divisors is an integer number (4615389).
Almost surely, 230769230 is an apocalyptic number.
30769230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.
30769230 is an abundant number, since it is smaller than the sum of its proper divisors (43076994).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30769230 is a wasteful number, since it uses less digits than its factorization.
30769230 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1025651.
The product of its (nonzero) digits is 6804, while the sum is 30.
The square root of 30769230 is about 5547.0018929148. The cubic root of 30769230 is about 313.3566214269.
The spelling of 30769230 in words is "thirty million, seven hundred sixty-nine thousand, two hundred thirty".
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