Base | Representation |
---|---|
bin | 111001101111… |
… | …1001000100001 |
3 | 2002222002020021 |
4 | 1303133020201 |
5 | 30222232311 |
6 | 3000513441 |
7 | 515216425 |
oct | 163371041 |
9 | 62862207 |
10 | 30274081 |
11 | 160a8402 |
12 | a17b881 |
13 | 636c976 |
14 | 4040b85 |
15 | 29d0171 |
hex | 1cdf221 |
30274081 has 2 divisors, whose sum is σ = 30274082. Its totient is φ = 30274080.
The previous prime is 30274039. The next prime is 30274099. The reversal of 30274081 is 18047203.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 26173456 + 4100625 = 5116^2 + 2025^2 .
It is a cyclic number.
It is not a de Polignac number, because 30274081 - 219 = 29749793 is a prime.
It is a super-2 number, since 2×302740812 = 1833039960789122, which contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (30274381) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15137040 + 15137041.
It is an arithmetic number, because the mean of its divisors is an integer number (15137041).
Almost surely, 230274081 is an apocalyptic number.
It is an amenable number.
30274081 is a deficient number, since it is larger than the sum of its proper divisors (1).
30274081 is an equidigital number, since it uses as much as digits as its factorization.
30274081 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 1344, while the sum is 25.
The square root of 30274081 is about 5502.1887463081. The cubic root of 30274081 is about 311.6666427725. Note that the first 4 decimals are identical.
The spelling of 30274081 in words is "thirty million, two hundred seventy-four thousand, eighty-one".
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