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258039 = 3319503
BaseRepresentation
bin111110111111110111
3111002222000
4332333313
531224124
65310343
72123205
oct767767
9432860
10258039
11166961
121053b3
13905b2
146a075
15516c9
hex3eff7

258039 has 16 divisors (see below), whose sum is σ = 403200. Its totient is φ = 162648.

The previous prime is 258031. The next prime is 258061. The reversal of 258039 is 930852.

258039 is nontrivially palindromic in base 8.

It is not a de Polignac number, because 258039 - 23 = 258031 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262 + ... + 764.

It is an arithmetic number, because the mean of its divisors is an integer number (25200).

2258039 is an apocalyptic number.

258039 is a deficient number, since it is larger than the sum of its proper divisors (145161).

258039 is a wasteful number, since it uses less digits than its factorization.

258039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531 (or 525 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 258039 is about 507.9753931048. The cubic root of 258039 is about 63.6641751657.

The spelling of 258039 in words is "two hundred fifty-eight thousand, thirty-nine".

Divisors: 1 3 9 19 27 57 171 503 513 1509 4527 9557 13581 28671 86013 258039