Base | Representation |
---|---|
bin | 1001001001101… |
… | …0001000000111 |
3 | 2200012220111221 |
4 | 2102122020013 |
5 | 34311130124 |
6 | 3450341211 |
7 | 644140105 |
oct | 222321007 |
9 | 80186457 |
10 | 38380039 |
11 | 1a734545 |
12 | 10a2a807 |
13 | 7c4a3a9 |
14 | 5150c75 |
15 | 3581ce4 |
hex | 249a207 |
38380039 has 4 divisors (see below), whose sum is σ = 38408256. Its totient is φ = 38351824.
The previous prime is 38380007. The next prime is 38380051. The reversal of 38380039 is 93008383.
It is a happy number.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93008383 = 13 ⋅7154491.
It is a cyclic number.
It is not a de Polignac number, because 38380039 - 25 = 38380007 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 38379986 and 38380013.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (38381039) 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, 11959 + ... + 14824.
It is an arithmetic number, because the mean of its divisors is an integer number (9602064).
Almost surely, 238380039 is an apocalyptic number.
38380039 is a deficient number, since it is larger than the sum of its proper divisors (28217).
38380039 is a wasteful number, since it uses less digits than its factorization.
38380039 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 28216.
The product of its (nonzero) digits is 15552, while the sum is 34.
The square root of 38380039 is about 6195.1625483114. The cubic root of 38380039 is about 337.3145984907.
The spelling of 38380039 in words is "thirty-eight million, three hundred eighty thousand, thirty-nine".
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