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234257 = 733209
BaseRepresentation
bin111001001100010001
3102220100012
4321030101
524444012
65004305
71663652
oct711421
9386305
10234257
11150001
12b3695
138281a
1461529
1549622
hex39311

234257 has 4 divisors (see below), whose sum is σ = 237540. Its totient is φ = 230976.

The previous prime is 234239. The next prime is 234259. The reversal of 234257 is 752432.

It is a Cunningham number, because it is equal to 224+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 132496 + 101761 = 364^2 + 319^2 .

It is a cyclic number.

It is not a de Polignac number, because 234257 - 26 = 234193 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 234257.

It is not an unprimeable number, because it can be changed into a prime (234259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1532 + ... + 1677.

It is an arithmetic number, because the mean of its divisors is an integer number (59385).

234257 is a Friedman number, since it can be written as (7+5*3)^4+2/2, using all its digits and the basic arithmetic operations.

2234257 is an apocalyptic number.

It is an amenable number.

234257 is a deficient number, since it is larger than the sum of its proper divisors (3283).

234257 is an equidigital number, since it uses as much as digits as its factorization.

234257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3282.

The product of its digits is 1680, while the sum is 23.

The square root of 234257 is about 484.0010330567. The cubic root of 234257 is about 61.6449529915.

Adding to 234257 its reverse (752432), we get a palindrome (986689).

It can be divided in two parts, 23425 and 7, that added together give a palindrome (23432).

The spelling of 234257 in words is "two hundred thirty-four thousand, two hundred fifty-seven".

Divisors: 1 73 3209 234257