Properties of the Number 4256

Four Thousand Two Hundred Fifty-Six

Basics

Value: 4255 → 4256 → 4257

Parity: even

Prime: No

Previous Prime: 4253

Next Prime: 4259

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ⁵ × 7 × 19

Divisors: 1, 2, 4, 7, 8, 14, 16, 19, 28, 32

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1000010100000

Octal: 10240

Duodecimal: 2568

Hexadecimal: 10a0

Square: 18113536

Square Root: 65.23802572120036

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

Octagonal numbers: n*(3·n-2). Also called star numbers. A567

Numbers k such that k and k+1 have the same sum of unitary divisors (A034448). A64125

a(1)=1, a(n)=a(n-1)+n if n odd, a(n)=a(n-1)+ n² if n is even. A140113

Table read by rows: T(n,k) = the number of regions with k sides, k >= 3, in a Farey diagram of order (n,n). A358885

Expansion of ∏_k>=1 (1 - x^k)¹². A735

a(n) = (2·n - 1)*(11·n² - 11·n + 6)/6. A63492

Square table, read by antidiagonals, where the g.f. for row n+1 is generated by: x·R_n+1(x) = (1+n·x - 1/R_n(x))/(n+1) with R₀(x) = ∑_n>=0 n!*xⁿ. A111528

Even octagonal numbers: a(n) = 4·n*(3·n-1). A14642

Stirling2 triangle with scaled diagonals (powers of 4). A75499

Row 4 of table A111528. A111531