Base | Representation |
---|---|
bin | 11100100010001110… |
… | …100011001010100101 |
3 | 2221002021200222221112 |
4 | 130202032203022211 |
5 | 1000222041313334 |
6 | 22024140154405 |
7 | 2133156202064 |
oct | 344216431245 |
9 | 87067628845 |
10 | 30639010469 |
11 | 11aa2a17061 |
12 | 5b30b38a05 |
13 | 2b7389bcc2 |
14 | 16a92681db |
15 | be4ca04ce |
hex | 7223a32a5 |
30639010469 has 2 divisors, whose sum is σ = 30639010470. Its totient is φ = 30639010468.
The previous prime is 30639010411. The next prime is 30639010559. The reversal of 30639010469 is 96401093603.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 22338889444 + 8300121025 = 149462^2 + 91105^2 .
It is a cyclic number.
It is not a de Polignac number, because 30639010469 - 216 = 30638944933 is a prime.
It is a super-2 number, since 2×306390104692 (a number of 22 digits) contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30639010069) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15319505234 + 15319505235.
It is an arithmetic number, because the mean of its divisors is an integer number (15319505235).
Almost surely, 230639010469 is an apocalyptic number.
It is an amenable number.
30639010469 is a deficient number, since it is larger than the sum of its proper divisors (1).
30639010469 is an equidigital number, since it uses as much as digits as its factorization.
30639010469 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 104976, while the sum is 41.
The spelling of 30639010469 in words is "thirty billion, six hundred thirty-nine million, ten thousand, four hundred sixty-nine".
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