Base | Representation |
---|---|
bin | 1001000101000… |
… | …0111001010001 |
3 | 2122122200001101 |
4 | 2101100321101 |
5 | 34222030311 |
6 | 3440104401 |
7 | 641450434 |
oct | 221207121 |
9 | 78580041 |
10 | 38080081 |
11 | 1a54a146 |
12 | 10905101 |
13 | 7b739c0 |
14 | 50b381b |
15 | 3522ec1 |
hex | 2450e51 |
38080081 has 4 divisors (see below), whose sum is σ = 41009332. Its totient is φ = 35150832.
The previous prime is 38080057. The next prime is 38080087. The reversal of 38080081 is 18008083.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18008083 = 17 ⋅1059299.
It can be written as a sum of positive squares in 2 ways, for example, as 9511056 + 28569025 = 3084^2 + 5345^2 .
It is a cyclic number.
It is not a de Polignac number, because 38080081 - 27 = 38079953 is a prime.
It is a super-2 number, since 2×380800812 = 2900185137933122, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (38080087) 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, 1464606 + ... + 1464631.
It is an arithmetic number, because the mean of its divisors is an integer number (10252333).
Almost surely, 238080081 is an apocalyptic number.
It is an amenable number.
38080081 is a deficient number, since it is larger than the sum of its proper divisors (2929251).
38080081 is a wasteful number, since it uses less digits than its factorization.
38080081 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2929250.
The product of its (nonzero) digits is 1536, while the sum is 28.
The square root of 38080081 is about 6170.9060112758. The cubic root of 38080081 is about 336.4335419508.
The spelling of 38080081 in words is "thirty-eight million, eighty thousand, eighty-one".
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