Base | Representation |
---|---|
bin | 111010101111… |
… | …0010100101001 |
3 | 2010221112212101 |
4 | 1311132110221 |
5 | 30340420144 |
6 | 3020013401 |
7 | 522516325 |
oct | 165362451 |
9 | 63845771 |
10 | 30795049 |
11 | 1642385a |
12 | a391261 |
13 | 64c2b2c |
14 | 4138985 |
15 | 2a846d4 |
hex | 1d5e529 |
30795049 has 2 divisors, whose sum is σ = 30795050. Its totient is φ = 30795048.
The previous prime is 30795019. The next prime is 30795073. The reversal of 30795049 is 94059703.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 20115225 + 10679824 = 4485^2 + 3268^2 .
It is a cyclic number.
It is not a de Polignac number, because 30795049 - 221 = 28697897 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 30794999 and 30795017.
It is not a weakly prime, because it can be changed into another prime (30795019) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15397524 + 15397525.
It is an arithmetic number, because the mean of its divisors is an integer number (15397525).
Almost surely, 230795049 is an apocalyptic number.
It is an amenable number.
30795049 is a deficient number, since it is larger than the sum of its proper divisors (1).
30795049 is an equidigital number, since it uses as much as digits as its factorization.
30795049 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 34020, while the sum is 37.
The square root of 30795049 is about 5549.3286981400. The cubic root of 30795049 is about 313.4442445999. Note that the first 3 decimals are identical.
It can be divided in two parts, 3079 and 5049, that added together give a triangular number (8128 = T127).
The spelling of 30795049 in words is "thirty million, seven hundred ninety-five thousand, forty-nine".
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