Properties of the Number 258

Two Hundred Fifty-Eight

Basics

Value: 257 → 258 → 259

Parity: even

Prime: No

Previous Prime: 257

Next Prime: 263

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 43

Divisors: 1, 2, 3, 6, 43, 86, 129, 258

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100000010

Octal: 402

Duodecimal: 196

Hexadecimal: 102

Square: 66564

Square Root: 16.06237840420901

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Abundant numbers (sum of divisors of m exceeds 2m). A5101

Unary-encoded compressed factorization of natural numbers. A156552

Fibbinary numbers: if n = F(i1) + F(i2) + ... + F(ik) is the Zeckendorf representation of n (i.e., write n in Fibonacci number system) then a(n) = 2^{i1 - 2} + 2^{i2 - 2} + ... + 2^{ik - 2}. Also numbers whose binary representation contains no two adjacent 1's. A3714

Sphenic numbers: products of 3 distinct primes. A7304

a(n) = prime(n) + 1. A8864

Numbers that are the sum of 2 successive primes. A1043

c-squarefree numbers: positive integers which in binary are concatenation of distinct parts of the form 10...0 with nonnegative number of zeros. A233564

Zumkeller or integer-perfect numbers: numbers n whose divisors can be partitioned into two disjoint sets with equal sum. A83207

Nonnegative multiples of 6. A8588

Number of strict knapsack partitions of n. A275972