Base | Representation |
---|---|
bin | 111010111101… |
… | …1100100011111 |
3 | 2011011122012100 |
4 | 1311323210133 |
5 | 30403233342 |
6 | 3022340143 |
7 | 523525515 |
oct | 165734437 |
9 | 64148170 |
10 | 30914847 |
11 | 164a5867 |
12 | a42a653 |
13 | 6535512 |
14 | 416a4b5 |
15 | 2aa9e4c |
hex | 1d7b91f |
30914847 has 12 divisors (see below), whose sum is σ = 45498024. Its totient is φ = 20220720.
The previous prime is 30914837. The next prime is 30914909. The reversal of 30914847 is 74841903.
It is a happy number.
It is not a de Polignac number, because 30914847 - 216 = 30849311 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30914837) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31929 + ... + 32882.
It is an arithmetic number, because the mean of its divisors is an integer number (3791502).
Almost surely, 230914847 is an apocalyptic number.
30914847 is a deficient number, since it is larger than the sum of its proper divisors (14583177).
30914847 is a wasteful number, since it uses less digits than its factorization.
30914847 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 64870 (or 64867 counting only the distinct ones).
The product of its (nonzero) digits is 24192, while the sum is 36.
The square root of 30914847 is about 5560.1121391569. The cubic root of 30914847 is about 313.8501692299.
The spelling of 30914847 in words is "thirty million, nine hundred fourteen thousand, eight hundred forty-seven".
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