Base | Representation |
---|---|
bin | 111001010110… |
… | …0110100101111 |
3 | 2002120121120012 |
4 | 1302230310233 |
5 | 30144134030 |
6 | 2552243435 |
7 | 513400565 |
oct | 162546457 |
9 | 62517505 |
10 | 30068015 |
11 | 15a775aa |
12 | a0a057b |
13 | 62c9c33 |
14 | 3dc9a35 |
15 | 298e095 |
hex | 1cacd2f |
30068015 has 16 divisors (see below), whose sum is σ = 38458368. Its totient is φ = 22514976.
The previous prime is 30068009. The next prime is 30068023. The reversal of 30068015 is 51086003.
It is not a de Polignac number, because 30068015 - 220 = 29019439 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (23).
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, 2624 + ... + 8186.
It is an arithmetic number, because the mean of its divisors is an integer number (2403648).
Almost surely, 230068015 is an apocalyptic number.
30068015 is a deficient number, since it is larger than the sum of its proper divisors (8390353).
30068015 is a wasteful number, since it uses less digits than its factorization.
30068015 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5638.
The product of its (nonzero) digits is 720, while the sum is 23.
The square root of 30068015 is about 5483.4309515120. The cubic root of 30068015 is about 310.9578938250.
The spelling of 30068015 in words is "thirty million, sixty-eight thousand, fifteen".
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