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238215 = 3515881
BaseRepresentation
bin111010001010000111
3110002202210
4322022013
530110330
65034503
72011335
oct721207
9402683
10238215
11152a7a
12b5a33
1384573
1462b55
154a8b0
hex3a287

238215 has 8 divisors (see below), whose sum is σ = 381168. Its totient is φ = 127040.

The previous prime is 238213. The next prime is 238223. The reversal of 238215 is 512832.

238215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 238215 - 21 = 238213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 238191 and 238200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238213) 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, 7926 + ... + 7955.

It is an arithmetic number, because the mean of its divisors is an integer number (47646).

2238215 is an apocalyptic number.

238215 is a deficient number, since it is larger than the sum of its proper divisors (142953).

238215 is a wasteful number, since it uses less digits than its factorization.

238215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15889.

The product of its digits is 480, while the sum is 21.

The square root of 238215 is about 488.0727404804. The cubic root of 238215 is about 61.9901996303.

The spelling of 238215 in words is "two hundred thirty-eight thousand, two hundred fifteen".

Divisors: 1 3 5 15 15881 47643 79405 238215