Base | Representation |
---|---|
bin | 11100011011101… |
… | …01010001001101 |
3 | 121121210102012202 |
4 | 32031311101031 |
5 | 442024211320 |
6 | 35400011245 |
7 | 5624163635 |
oct | 1615652115 |
9 | 547712182 |
10 | 238507085 |
11 | 1126a39a3 |
12 | 67a60b25 |
13 | 3a54a46b |
14 | 239676c5 |
15 | 15e13b75 |
hex | e37544d |
238507085 has 8 divisors (see below), whose sum is σ = 286473240. Its totient is φ = 190629184.
The previous prime is 238507081. The next prime is 238507091. The reversal of 238507085 is 580705832.
It can be written as a sum of positive squares in 4 ways, for example, as 5822569 + 232684516 = 2413^2 + 15254^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 238507085 - 22 = 238507081 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (238507081) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15962 + ... + 27051.
It is an arithmetic number, because the mean of its divisors is an integer number (35809155).
Almost surely, 2238507085 is an apocalyptic number.
It is an amenable number.
238507085 is a deficient number, since it is larger than the sum of its proper divisors (47966155).
238507085 is a wasteful number, since it uses less digits than its factorization.
238507085 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 44127.
The product of its (nonzero) digits is 67200, while the sum is 38.
The square root of 238507085 is about 15443.6745951215. The cubic root of 238507085 is about 620.1552550837.
The spelling of 238507085 in words is "two hundred thirty-eight million, five hundred seven thousand, eighty-five".
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