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256263 = 3712203
BaseRepresentation
bin111110100100000111
3111000112020
4332210013
531200023
65254223
72115060
oct764407
9430466
10256263
11165597
12104373
138c847
1469567
1550de3
hex3e907

256263 has 8 divisors (see below), whose sum is σ = 390528. Its totient is φ = 146424.

The previous prime is 256219. The next prime is 256279. The reversal of 256263 is 362652.

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

It is not a de Polignac number, because 256263 - 26 = 256199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256163) 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, 6081 + ... + 6122.

It is an arithmetic number, because the mean of its divisors is an integer number (48816).

2256263 is an apocalyptic number.

256263 is a deficient number, since it is larger than the sum of its proper divisors (134265).

256263 is a wasteful number, since it uses less digits than its factorization.

256263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12213.

The product of its digits is 2160, while the sum is 24.

The square root of 256263 is about 506.2242586048. The cubic root of 256263 is about 63.5177787241.

It can be divided in two parts, 2 and 56263, that added together give a palindrome (56265).

The spelling of 256263 in words is "two hundred fifty-six thousand, two hundred sixty-three".

Divisors: 1 3 7 21 12203 36609 85421 256263