Base | Representation |
---|---|
bin | 1001001111110… |
… | …1110100010001 |
3 | 2200222122122021 |
4 | 2103331310101 |
5 | 34412211434 |
6 | 3503211441 |
7 | 650460424 |
oct | 223756421 |
9 | 80878567 |
10 | 38788369 |
11 | 1a993304 |
12 | 10ba6b81 |
13 | 80611c9 |
14 | 52199bb |
15 | 3612cb4 |
hex | 24fdd11 |
38788369 has 2 divisors, whose sum is σ = 38788370. Its totient is φ = 38788368.
The previous prime is 38788319. The next prime is 38788381. The reversal of 38788369 is 96388783.
It is a happy number.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 38291344 + 497025 = 6188^2 + 705^2 .
It is an emirp because it is prime and its reverse (96388783) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 38788369 - 27 = 38788241 is a prime.
It is a super-2 number, since 2×387883692 = 3009075139360322, which contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (38788319) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19394184 + 19394185.
It is an arithmetic number, because the mean of its divisors is an integer number (19394185).
Almost surely, 238788369 is an apocalyptic number.
It is an amenable number.
38788369 is a deficient number, since it is larger than the sum of its proper divisors (1).
38788369 is an equidigital number, since it uses as much as digits as its factorization.
38788369 is an evil number, because the sum of its binary digits is even.
The product of its digits is 1741824, while the sum is 52.
The square root of 38788369 is about 6228.0309087223. The cubic root of 38788369 is about 338.5066250239.
The spelling of 38788369 in words is "thirty-eight million, seven hundred eighty-eight thousand, three hundred sixty-nine".
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