Base | Representation |
---|---|
bin | 1001000011110… |
… | …1011000000011 |
3 | 2122111121101021 |
4 | 2100331120003 |
5 | 34212001011 |
6 | 3434250311 |
7 | 640665361 |
oct | 220753003 |
9 | 78447337 |
10 | 38000131 |
11 | 1a4a5074 |
12 | 10886997 |
13 | 7b464b0 |
14 | 5092631 |
15 | 3509471 |
hex | 243d603 |
38000131 has 4 divisors (see below), whose sum is σ = 40923232. Its totient is φ = 35077032.
The previous prime is 38000129. The next prime is 38000143. The reversal of 38000131 is 13100083.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 38000131 - 21 = 38000129 is a prime.
It is a super-2 number, since 2×380001312 = 2888019912034322, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (38000161) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1461531 + ... + 1461556.
It is an arithmetic number, because the mean of its divisors is an integer number (10230808).
Almost surely, 238000131 is an apocalyptic number.
38000131 is a deficient number, since it is larger than the sum of its proper divisors (2923101).
38000131 is a wasteful number, since it uses less digits than its factorization.
38000131 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2923100.
The product of its (nonzero) digits is 72, while the sum is 16.
The square root of 38000131 is about 6164.4246284629. The cubic root of 38000131 is about 336.1979270117.
The spelling of 38000131 in words is "thirty-eight million, one hundred thirty-one", and thus it is an aban number.
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