Base | Representation |
---|---|
bin | 10101011111001… |
… | …00011010100001 |
3 | 110120011020122122 |
4 | 22233210122201 |
5 | 332120221311 |
6 | 25515114025 |
7 | 4316014055 |
oct | 1257443241 |
9 | 416136578 |
10 | 180242081 |
11 | 928185a8 |
12 | 50442915 |
13 | 2b45a126 |
14 | 19d1bc65 |
15 | 10c550db |
hex | abe46a1 |
180242081 has 8 divisors (see below), whose sum is σ = 181738080. Its totient is φ = 178751872.
The previous prime is 180242063. The next prime is 180242087.
180242081 is nontrivially palindromic in base 10.
180242081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 180242081 - 26 = 180242017 is a prime.
It is a super-2 number, since 2×1802420812 = 64974415526421122, which contains 22 as substring.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 180242081.
It is not an unprimeable number, because it can be changed into a prime (180242087) 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, 78161 + ... + 80433.
It is an arithmetic number, because the mean of its divisors is an integer number (22717260).
Almost surely, 2180242081 is an apocalyptic number.
It is an amenable number.
180242081 is a deficient number, since it is larger than the sum of its proper divisors (1495999).
180242081 is a wasteful number, since it uses less digits than its factorization.
180242081 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2895.
The product of its (nonzero) digits is 1024, while the sum is 26.
The square root of 180242081 is about 13425.4266598868. The cubic root of 180242081 is about 564.8746227661.
The spelling of 180242081 in words is "one hundred eighty million, two hundred forty-two thousand, eighty-one".
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