Base | Representation |
---|---|
bin | 111010110011… |
… | …1110110100111 |
3 | 2011000112102020 |
4 | 1311213312213 |
5 | 30343142322 |
6 | 3020514223 |
7 | 523041204 |
oct | 165476647 |
9 | 64015366 |
10 | 30834087 |
11 | 16450119 |
12 | a3ab973 |
13 | 650782b |
14 | 4148cab |
15 | 2a9105c |
hex | 1d67da7 |
30834087 has 4 divisors (see below), whose sum is σ = 41112120. Its totient is φ = 20556056.
The previous prime is 30834077. The next prime is 30834103. The reversal of 30834087 is 78043803.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78043803 = 3 ⋅26014601.
It is a cyclic number.
It is not a de Polignac number, because 30834087 - 215 = 30801319 is a prime.
It is a super-2 number, since 2×308340872 = 1901481842247138, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30834077) 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 3 ways as a sum of consecutive naturals, for example, 5139012 + ... + 5139017.
It is an arithmetic number, because the mean of its divisors is an integer number (10278030).
Almost surely, 230834087 is an apocalyptic number.
30834087 is a deficient number, since it is larger than the sum of its proper divisors (10278033).
30834087 is a wasteful number, since it uses less digits than its factorization.
30834087 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 10278032.
The product of its (nonzero) digits is 16128, while the sum is 33.
The square root of 30834087 is about 5552.8449465117. The cubic root of 30834087 is about 313.5766367641.
The spelling of 30834087 in words is "thirty million, eight hundred thirty-four thousand, eighty-seven".
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