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238269 = 379423
BaseRepresentation
bin111010001010111101
3110002211210
4322022331
530111034
65035033
72011443
oct721275
9402753
10238269
11153019
12b5a79
13845b5
1462b93
154a8e9
hex3a2bd

238269 has 4 divisors (see below), whose sum is σ = 317696. Its totient is φ = 158844.

The previous prime is 238267. The next prime is 238291. The reversal of 238269 is 962832.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 238269 - 21 = 238267 is a prime.

It is a super-2 number, since 2×2382692 = 113544232722, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238261) 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, 39709 + ... + 39714.

It is an arithmetic number, because the mean of its divisors is an integer number (79424).

2238269 is an apocalyptic number.

It is an amenable number.

238269 is a deficient number, since it is larger than the sum of its proper divisors (79427).

238269 is an equidigital number, since it uses as much as digits as its factorization.

238269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79426.

The product of its digits is 5184, while the sum is 30.

The square root of 238269 is about 488.1280569687. The cubic root of 238269 is about 61.9948833794.

The spelling of 238269 in words is "two hundred thirty-eight thousand, two hundred sixty-nine".

Divisors: 1 3 79423 238269