Base | Representation |
---|---|
bin | 1001000110100… |
… | …1011010110010 |
3 | 2122211202211201 |
4 | 2101221122302 |
5 | 34233234110 |
6 | 3442201414 |
7 | 642346333 |
oct | 221513262 |
9 | 78752751 |
10 | 38180530 |
11 | 1a608663 |
12 | 1095326a |
13 | 7baa63b |
14 | 50dc28a |
15 | 3542b3a |
hex | 24696b2 |
38180530 has 48 divisors (see below), whose sum is σ = 73998360. Its totient is φ = 14165760.
The previous prime is 38180491. The next prime is 38180531. The reversal of 38180530 is 3508183.
It can be written as a sum of positive squares in 4 ways, for example, as 32182929 + 5997601 = 5673^2 + 2449^2 .
It is a super-3 number, since 3×381805303 (a number of 24 digits) contains 333 as substring.
It is not an unprimeable number, because it can be changed into a prime (38180531) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 278622 + ... + 278758.
Almost surely, 238180530 is an apocalyptic number.
38180530 is a deficient number, since it is larger than the sum of its proper divisors (35817830).
38180530 is a wasteful number, since it uses less digits than its factorization.
38180530 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 235 (or 204 counting only the distinct ones).
The product of its (nonzero) digits is 2880, while the sum is 28.
The square root of 38180530 is about 6179.0395693829. The cubic root of 38180530 is about 336.7291010351.
The spelling of 38180530 in words is "thirty-eight million, one hundred eighty thousand, five hundred thirty".
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