Base | Representation |
---|---|
bin | 111010111111… |
… | …1011011010011 |
3 | 2011012102212101 |
4 | 1311333123103 |
5 | 30404240033 |
6 | 3022541231 |
7 | 523622542 |
oct | 165773323 |
9 | 64172771 |
10 | 30930643 |
11 | 16506717 |
12 | a437817 |
13 | 653c773 |
14 | 4172159 |
15 | 2aae97d |
hex | 1d7f6d3 |
30930643 has 2 divisors, whose sum is σ = 30930644. Its totient is φ = 30930642.
The previous prime is 30930637. The next prime is 30930649. The reversal of 30930643 is 34603903.
It is a balanced prime because it is at equal distance from previous prime (30930637) and next prime (30930649).
It is a cyclic number.
It is not a de Polignac number, because 30930643 - 29 = 30930131 is a prime.
It is not a weakly prime, because it can be changed into another prime (30930649) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15465321 + 15465322.
It is an arithmetic number, because the mean of its divisors is an integer number (15465322).
Almost surely, 230930643 is an apocalyptic number.
30930643 is a deficient number, since it is larger than the sum of its proper divisors (1).
30930643 is an equidigital number, since it uses as much as digits as its factorization.
30930643 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 5832, while the sum is 28.
The square root of 30930643 is about 5561.5324327023. The cubic root of 30930643 is about 313.9036142423.
The spelling of 30930643 in words is "thirty million, nine hundred thirty thousand, six hundred forty-three".
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