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258006 = 2376143
BaseRepresentation
bin111110111111010110
3111002220210
4332333112
531224011
65310250
72123130
oct767726
9432823
10258006
11166931
12105386
1390588
146a050
15516a6
hex3efd6

258006 has 16 divisors (see below), whose sum is σ = 589824. Its totient is φ = 73704.

The previous prime is 257993. The next prime is 258019. The reversal of 258006 is 600852.

258006 = T268 + T269 + ... + T274.

It is a happy number.

258006 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (257993) and next prime (258019).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

258006 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3030 + ... + 3113.

It is an arithmetic number, because the mean of its divisors is an integer number (36864).

2258006 is an apocalyptic number.

258006 is an abundant number, since it is smaller than the sum of its proper divisors (331818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

258006 is a wasteful number, since it uses less digits than its factorization.

258006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6155.

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

The square root of 258006 is about 507.9429101779. The cubic root of 258006 is about 63.6614610962.

Adding to 258006 its reverse (600852), we get a palindrome (858858).

The spelling of 258006 in words is "two hundred fifty-eight thousand, six".

Divisors: 1 2 3 6 7 14 21 42 6143 12286 18429 36858 43001 86002 129003 258006