Base | Representation |
---|---|
bin | 111010000111… |
… | …1101000000111 |
3 | 2010100011200221 |
4 | 1310033220013 |
5 | 30300111321 |
6 | 3005045211 |
7 | 520004503 |
oct | 164175007 |
9 | 63304627 |
10 | 30472711 |
11 | 16223665 |
12 | a256807 |
13 | 640c1b9 |
14 | 4093303 |
15 | 2a1de41 |
hex | 1d0fa07 |
30472711 has 2 divisors, whose sum is σ = 30472712. Its totient is φ = 30472710.
The previous prime is 30472697. The next prime is 30472753. The reversal of 30472711 is 11727403.
It is a happy number.
It is a weak prime.
It is an emirp because it is prime and its reverse (11727403) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30472711 - 27 = 30472583 is a prime.
It is a super-2 number, since 2×304727112 = 1857172231379042, which contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30479711) 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, 15236355 + 15236356.
It is an arithmetic number, because the mean of its divisors is an integer number (15236356).
Almost surely, 230472711 is an apocalyptic number.
30472711 is a deficient number, since it is larger than the sum of its proper divisors (1).
30472711 is an equidigital number, since it uses as much as digits as its factorization.
30472711 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 1176, while the sum is 25.
The square root of 30472711 is about 5520.2093257412. The cubic root of 30472711 is about 312.3467784330.
The spelling of 30472711 in words is "thirty million, four hundred seventy-two thousand, seven hundred eleven".
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