Base | Representation |
---|---|
bin | 11110110010010… |
… | …10100000100111 |
3 | 122222221201002211 |
4 | 33121022200213 |
5 | 1012103124022 |
6 | 41343144251 |
7 | 6254062462 |
oct | 1731124047 |
9 | 588851084 |
10 | 258254887 |
11 | 1228617a0 |
12 | 725a5087 |
13 | 41672b57 |
14 | 264282d9 |
15 | 17a14e77 |
hex | f64a827 |
258254887 has 12 divisors (see below), whose sum is σ = 284622984. Its totient is φ = 232392720.
The previous prime is 258254869. The next prime is 258254891. The reversal of 258254887 is 788452852.
258254887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 258254887 - 227 = 124037159 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 258254887.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (258254807) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115593 + ... + 117805.
It is an arithmetic number, because the mean of its divisors is an integer number (23718582).
Almost surely, 2258254887 is an apocalyptic number.
258254887 is a deficient number, since it is larger than the sum of its proper divisors (26368097).
258254887 is a wasteful number, since it uses less digits than its factorization.
258254887 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2430 (or 2327 counting only the distinct ones).
The product of its digits is 1433600, while the sum is 49.
The square root of 258254887 is about 16070.3107312833. The cubic root of 258254887 is about 636.8192498461.
The spelling of 258254887 in words is "two hundred fifty-eight million, two hundred fifty-four thousand, eight hundred eighty-seven".
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