Base | Representation |
---|---|
bin | 111010001100… |
… | …1011101111001 |
3 | 2010102012222202 |
4 | 1310121131321 |
5 | 30302404032 |
6 | 3005555545 |
7 | 520233143 |
oct | 164313571 |
9 | 63365882 |
10 | 30513017 |
11 | 16250977 |
12 | a275bb5 |
13 | 6424652 |
14 | 40a3c93 |
15 | 2a2ad62 |
hex | 1d19779 |
30513017 has 8 divisors (see below), whose sum is σ = 31638600. Its totient is φ = 29392384.
The previous prime is 30512987. The next prime is 30513047. The reversal of 30513017 is 71031503.
It is a happy number.
It is an interprime number because it is at equal distance from previous prime (30512987) and next prime (30513047).
It can be written as a sum of positive squares in 4 ways, for example, as 712336 + 29800681 = 844^2 + 5459^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 30513017 - 28 = 30512761 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 30513017.
It is not an unprimeable number, because it can be changed into a prime (30513047) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15209 + ... + 17097.
It is an arithmetic number, because the mean of its divisors is an integer number (3954825).
Almost surely, 230513017 is an apocalyptic number.
It is an amenable number.
30513017 is a deficient number, since it is larger than the sum of its proper divisors (1125583).
30513017 is a wasteful number, since it uses less digits than its factorization.
30513017 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2475.
The product of its (nonzero) digits is 315, while the sum is 20.
The square root of 30513017 is about 5523.8588866842. The cubic root of 30513017 is about 312.4844305843.
The spelling of 30513017 in words is "thirty million, five hundred thirteen thousand, seventeen".
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