Base | Representation |
---|---|
bin | 111001010110… |
… | …1000111011111 |
3 | 2002120200012122 |
4 | 1302231013133 |
5 | 30144203330 |
6 | 2552253155 |
7 | 513404231 |
oct | 162550737 |
9 | 62520178 |
10 | 30069215 |
11 | 15a784a0 |
12 | a0a11bb |
13 | 62ca647 |
14 | 3dca251 |
15 | 298e5e5 |
hex | 1cad1df |
30069215 has 16 divisors (see below), whose sum is σ = 39760416. Its totient is φ = 21648000.
The previous prime is 30069203. The next prime is 30069223. The reversal of 30069215 is 51296003.
It is not a de Polignac number, because 30069215 - 24 = 30069199 is a prime.
It is a Duffinian number.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2849 + ... + 8261.
It is an arithmetic number, because the mean of its divisors is an integer number (2485026).
Almost surely, 230069215 is an apocalyptic number.
30069215 is a deficient number, since it is larger than the sum of its proper divisors (9691201).
30069215 is a wasteful number, since it uses less digits than its factorization.
30069215 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5530.
The product of its (nonzero) digits is 1620, while the sum is 26.
The square root of 30069215 is about 5483.5403709647. The cubic root of 30069215 is about 310.9620304965.
It can be divided in two parts, 3006 and 9215, that added together give a palindrome (12221).
The spelling of 30069215 in words is "thirty million, sixty-nine thousand, two hundred fifteen".
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