Base | Representation |
---|---|
bin | 1001001001101… |
… | …0001001011011 |
3 | 2200012220122001 |
4 | 2102122021123 |
5 | 34311130443 |
6 | 3450341431 |
7 | 644140255 |
oct | 222321133 |
9 | 80186561 |
10 | 38380123 |
11 | 1a734611 |
12 | 10a2a877 |
13 | 7c4a442 |
14 | 5150cd5 |
15 | 3581d4d |
hex | 249a25b |
38380123 has 16 divisors (see below), whose sum is σ = 41412096. Its totient is φ = 35481600.
The previous prime is 38380117. The next prime is 38380129. The reversal of 38380123 is 32108383.
It is an interprime number because it is at equal distance from previous prime (38380117) and next prime (38380129).
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-38380123 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 38380091 and 38380100.
It is not an unprimeable number, because it can be changed into a prime (38380129) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149211 + ... + 149467.
It is an arithmetic number, because the mean of its divisors is an integer number (2588256).
Almost surely, 238380123 is an apocalyptic number.
38380123 is a deficient number, since it is larger than the sum of its proper divisors (3031973).
38380123 is a wasteful number, since it uses less digits than its factorization.
38380123 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 474.
The product of its (nonzero) digits is 3456, while the sum is 28.
The square root of 38380123 is about 6195.1693277908. The cubic root of 38380123 is about 337.3148445770.
It can be divided in two parts, 38380 and 123, that added together give a triangular number (38503 = T277).
The spelling of 38380123 in words is "thirty-eight million, three hundred eighty thousand, one hundred twenty-three".
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