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230438 = 2138863
BaseRepresentation
bin111000010000100110
3102201002202
4320100212
524333223
64534502
71646555
oct702046
9381082
10230438
1114814a
12b1432
1380b70
145dd9c
1548428
hex38426

230438 has 8 divisors (see below), whose sum is σ = 372288. Its totient is φ = 106344.

The previous prime is 230431. The next prime is 230449. The reversal of 230438 is 834032.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230431) by changing a digit.

230438 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4406 + ... + 4457.

It is an arithmetic number, because the mean of its divisors is an integer number (46536).

2230438 is an apocalyptic number.

230438 is a deficient number, since it is larger than the sum of its proper divisors (141850).

230438 is a wasteful number, since it uses less digits than its factorization.

230438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8878.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 230438 is about 480.0395817013. The cubic root of 230438 is about 61.3081247486.

The spelling of 230438 in words is "two hundred thirty thousand, four hundred thirty-eight".

Divisors: 1 2 13 26 8863 17726 115219 230438