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256214 = 2718301
BaseRepresentation
bin111110100011010110
3111000110102
4332203112
531144324
65254102
72114660
oct764326
9430412
10256214
11165552
12104332
138c80a
1469530
1550dae
hex3e8d6

256214 has 8 divisors (see below), whose sum is σ = 439248. Its totient is φ = 109800.

The previous prime is 256211. The next prime is 256219. The reversal of 256214 is 412652.

It is a happy number.

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

It is a super-2 number, since 2×2562142 = 131291227592, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 256214.

It is not an unprimeable number, because it can be changed into a prime (256211) 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, 9137 + ... + 9164.

It is an arithmetic number, because the mean of its divisors is an integer number (54906).

2256214 is an apocalyptic number.

256214 is a deficient number, since it is larger than the sum of its proper divisors (183034).

256214 is a wasteful number, since it uses less digits than its factorization.

256214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18310.

The product of its digits is 480, while the sum is 20.

The square root of 256214 is about 506.1758587685. The cubic root of 256214 is about 63.5137300585.

Adding to 256214 its reverse (412652), we get a palindrome (668866).

The spelling of 256214 in words is "two hundred fifty-six thousand, two hundred fourteen".

Divisors: 1 2 7 14 18301 36602 128107 256214