Base | Representation |
---|---|
bin | 111111000110… |
… | …1101011000101 |
3 | 2022020221122221 |
4 | 1332031223011 |
5 | 31432224044 |
6 | 3141052341 |
7 | 551141035 |
oct | 176155305 |
9 | 68227587 |
10 | 33086149 |
11 | 17749128 |
12 | b0b70b1 |
13 | 6b15905 |
14 | 45738c5 |
15 | 2d88484 |
hex | 1f8dac5 |
33086149 has 4 divisors (see below), whose sum is σ = 33230860. Its totient is φ = 32941440.
The previous prime is 33086147. The next prime is 33086161. The reversal of 33086149 is 94168033.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94168033 = 401 ⋅234833.
It can be written as a sum of positive squares in 2 ways, for example, as 32285124 + 801025 = 5682^2 + 895^2 .
It is a cyclic number.
It is not a de Polignac number, because 33086149 - 21 = 33086147 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (33086143) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72012 + ... + 72469.
It is an arithmetic number, because the mean of its divisors is an integer number (8307715).
Almost surely, 233086149 is an apocalyptic number.
It is an amenable number.
33086149 is a deficient number, since it is larger than the sum of its proper divisors (144711).
33086149 is a wasteful number, since it uses less digits than its factorization.
33086149 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 144710.
The product of its (nonzero) digits is 15552, while the sum is 34.
The square root of 33086149 is about 5752.0560671815. The cubic root of 33086149 is about 321.0323075113.
The spelling of 33086149 in words is "thirty-three million, eighty-six thousand, one hundred forty-nine".
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