Base | Representation |
---|---|
bin | 11110110001000… |
… | …01100100010101 |
3 | 122222122012001210 |
4 | 33120201210111 |
5 | 1012032242224 |
6 | 41335412033 |
7 | 6252463533 |
oct | 1730414425 |
9 | 588565053 |
10 | 258087189 |
11 | 1227577a8 |
12 | 72524019 |
13 | 41614719 |
14 | 263c3153 |
15 | 179d0429 |
hex | f621915 |
258087189 has 8 divisors (see below), whose sum is σ = 344444832. Its totient is φ = 171893840.
The previous prime is 258087187. The next prime is 258087197. The reversal of 258087189 is 981780852.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 258087189 - 21 = 258087187 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (258087187) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37359 + ... + 43724.
It is an arithmetic number, because the mean of its divisors is an integer number (43055604).
Almost surely, 2258087189 is an apocalyptic number.
It is an amenable number.
258087189 is a deficient number, since it is larger than the sum of its proper divisors (86357643).
258087189 is a wasteful number, since it uses less digits than its factorization.
258087189 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 82147.
The product of its (nonzero) digits is 322560, while the sum is 48.
The square root of 258087189 is about 16065.0922499686. The cubic root of 258087189 is about 636.6813803178.
The spelling of 258087189 in words is "two hundred fifty-eight million, eighty-seven thousand, one hundred eighty-nine".
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