Properties of the Number 13258

Thirteen Thousand Two Hundred Fifty-Eight

Basics

Value: 13257 → 13258 → 13259

Parity: even

Prime: No

Previous Prime: 13249

Next Prime: 13259

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 7 × 947

Divisors: 1, 2, 7, 14, 947, 1894, 6629, 13258

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11001111001010

Octal: 31712

Duodecimal: 780A

Hexadecimal: 33ca

Square: 175774564

Square Root: 115.14338886796757

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

Positions of 2's in A264977; positions of 3's in A277330. A277712

a(n) is the smallest integer m such that m-n is composite and φ(m-n) + σ(m+n) = φ(m+n) + σ(m-n). A244448

Numbers n such that 30n+{11, 13, 17, 19, 23} are 5 consecutive primes. A182279

a(n) is the number of regions formed by n-secting the angles of a heptagon. A335757

Number of strict compositions of n with alternating parts strictly decreasing. A342343

First differences of A065094 and also arithmetic means of initial terms of A065094. A241772

37-gonal numbers: a(n) = n*(35·n-33)/2. A282852

Numbers m such that ψ(x) = φ(m) has a solution while σ(y) = φ(m) has none. A291524

Genocchi numbers of second kind (A005439) divided by 2^n-1. A366

G.f. A(x) satisfies: 0 = [x^n-1] 1 / A(x)^n²+n-1 for n>2. A303562