Base | Representation |
---|---|
bin | 1001000111010… |
… | …1000010001111 |
3 | 2122221012002222 |
4 | 2101311002033 |
5 | 34241244421 |
6 | 3443205555 |
7 | 642635135 |
oct | 221650217 |
9 | 78835088 |
10 | 38228111 |
11 | 1a640389 |
12 | 109768bb |
13 | 7bc61ac |
14 | 5111755 |
15 | 3551cab |
hex | 247508f |
38228111 has 2 divisors, whose sum is σ = 38228112. Its totient is φ = 38228110.
The previous prime is 38228101. The next prime is 38228117. The reversal of 38228111 is 11182283.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 38228111 - 214 = 38211727 is a prime.
It is a super-2 number, since 2×382281112 = 2922776941256642, which contains 22 as substring.
It is a Sophie Germain prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (38228117) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19114055 + 19114056.
It is an arithmetic number, because the mean of its divisors is an integer number (19114056).
Almost surely, 238228111 is an apocalyptic number.
38228111 is a deficient number, since it is larger than the sum of its proper divisors (1).
38228111 is an equidigital number, since it uses as much as digits as its factorization.
38228111 is an evil number, because the sum of its binary digits is even.
The product of its digits is 768, while the sum is 26.
The square root of 38228111 is about 6182.8885644171. Note that the first 3 decimals coincide. The cubic root of 38228111 is about 336.8689214829.
The spelling of 38228111 in words is "thirty-eight million, two hundred twenty-eight thousand, one hundred eleven".
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