Base | Representation |
---|---|
bin | 1001001111110… |
… | …0000001010010 |
3 | 2200222021112201 |
4 | 2103330001102 |
5 | 34411443020 |
6 | 3503113414 |
7 | 650430112 |
oct | 223740122 |
9 | 80867481 |
10 | 38781010 |
11 | 1a988824 |
12 | 10ba286a |
13 | 805aa58 |
14 | 5217042 |
15 | 3610a0a |
hex | 24fc052 |
38781010 has 8 divisors (see below), whose sum is σ = 69805836. Its totient is φ = 15512400.
The previous prime is 38780947. The next prime is 38781011. The reversal of 38781010 is 1018783.
It is a happy number.
It can be written as a sum of positive squares in 2 ways, for example, as 38155329 + 625681 = 6177^2 + 791^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is an alternating number because its digits alternate between odd and even.
It is a self number, because there is not a number n which added to its sum of digits gives 38781010.
It is not an unprimeable number, because it can be changed into a prime (38781011) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1939041 + ... + 1939060.
Almost surely, 238781010 is an apocalyptic number.
38781010 is a deficient number, since it is larger than the sum of its proper divisors (31024826).
38781010 is a wasteful number, since it uses less digits than its factorization.
38781010 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3878108.
The product of its (nonzero) digits is 1344, while the sum is 28.
The square root of 38781010 is about 6227.4400840153. The cubic root of 38781010 is about 338.4852163055.
Adding to 38781010 its reverse (1018783), we get a palindrome (39799793).
The spelling of 38781010 in words is "thirty-eight million, seven hundred eighty-one thousand, ten".
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