Base | Representation |
---|---|
bin | 1000000001010… |
… | …11010000001111 |
3 | 11200121111002020 |
4 | 10000223100033 |
5 | 114211123111 |
6 | 10402101223 |
7 | 1444631121 |
oct | 400532017 |
9 | 150544066 |
10 | 67286031 |
11 | 34a87a9a |
12 | 1a64a813 |
13 | 10c2b427 |
14 | 8d17211 |
15 | 5d91906 |
hex | 402b40f |
67286031 has 8 divisors (see below), whose sum is σ = 89841024. Its totient is φ = 44794200.
The previous prime is 67286029. The next prime is 67286033. The reversal of 67286031 is 13068276.
It is an interprime number because it is at equal distance from previous prime (67286029) and next prime (67286033).
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 67286031 - 21 = 67286029 is a prime.
It is a super-2 number, since 2×672860312 = 9054819935465922, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 67285983 and 67286001.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (67286033) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13245 + ... + 17606.
It is an arithmetic number, because the mean of its divisors is an integer number (11230128).
Almost surely, 267286031 is an apocalyptic number.
67286031 is a deficient number, since it is larger than the sum of its proper divisors (22554993).
67286031 is a wasteful number, since it uses less digits than its factorization.
67286031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 31581.
The product of its (nonzero) digits is 12096, while the sum is 33.
The square root of 67286031 is about 8202.8062880943. The cubic root of 67286031 is about 406.7319639691.
The spelling of 67286031 in words is "sixty-seven million, two hundred eighty-six thousand, thirty-one".
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