Base | Representation |
---|---|
bin | 111010010100… |
… | …1110100101101 |
3 | 2010112121220002 |
4 | 1310221310231 |
5 | 30312030023 |
6 | 3011234045 |
7 | 520632362 |
oct | 164516455 |
9 | 63477802 |
10 | 30580013 |
11 | 16297242 |
12 | a2a8925 |
13 | 6448ca9 |
14 | 40c0469 |
15 | 2a40b28 |
hex | 1d29d2d |
30580013 has 2 divisors, whose sum is σ = 30580014. Its totient is φ = 30580012.
The previous prime is 30580001. The next prime is 30580021. The reversal of 30580013 is 31008503.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 19377604 + 11202409 = 4402^2 + 3347^2 .
It is an emirp because it is prime and its reverse (31008503) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30580013 - 218 = 30317869 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30580813) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15290006 + 15290007.
It is an arithmetic number, because the mean of its divisors is an integer number (15290007).
Almost surely, 230580013 is an apocalyptic number.
It is an amenable number.
30580013 is a deficient number, since it is larger than the sum of its proper divisors (1).
30580013 is an equidigital number, since it uses as much as digits as its factorization.
30580013 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 360, while the sum is 20.
The square root of 30580013 is about 5529.9198005034. The cubic root of 30580013 is about 312.7129658727.
Adding to 30580013 its reverse (31008503), we get a palindrome (61588516).
The spelling of 30580013 in words is "thirty million, five hundred eighty thousand, thirteen".
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