Base | Representation |
---|---|
bin | 1001000111010… |
… | …1000010001001 |
3 | 2122221012002202 |
4 | 2101311002021 |
5 | 34241244410 |
6 | 3443205545 |
7 | 642635126 |
oct | 221650211 |
9 | 78835082 |
10 | 38228105 |
11 | 1a640383 |
12 | 109768b5 |
13 | 7bc61a6 |
14 | 511174d |
15 | 3551ca5 |
hex | 2475089 |
38228105 has 16 divisors (see below), whose sum is σ = 47056464. Its totient is φ = 29802240.
The previous prime is 38228101. The next prime is 38228111. The reversal of 38228105 is 50182283.
It can be written as a sum of positive squares in 8 ways, for example, as 3429904 + 34798201 = 1852^2 + 5899^2 .
It is not a de Polignac number, because 38228105 - 22 = 38228101 is a prime.
It is a super-2 number, since 2×382281052 = 2922776023782050, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (38228101) 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, 47567 + ... + 48363.
It is an arithmetic number, because the mean of its divisors is an integer number (2941029).
Almost surely, 238228105 is an apocalyptic number.
It is an amenable number.
38228105 is a deficient number, since it is larger than the sum of its proper divisors (8828359).
38228105 is a wasteful number, since it uses less digits than its factorization.
38228105 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1036.
The product of its (nonzero) digits is 3840, while the sum is 29.
The square root of 38228105 is about 6182.8880792070. Note that the first 3 decimals coincide. The cubic root of 38228105 is about 336.8689038588.
The spelling of 38228105 in words is "thirty-eight million, two hundred twenty-eight thousand, one hundred five".
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