Properties of the Number -212738

Two Hundred Twelve Thousand Seven Hundred Thirty-Eight

Basics

Value: -212739 → -212738 → -212737

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 × 17 × 6257

Divisors: 1, 2, 17, 34, 6257, 12514, 106369, 212738

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4938 Try Today's Challenge

Representations

Binary: -110011111100000010

Octal: -637402

Duodecimal: -A3142

Hexadecimal: -33f02

Square: 45257456644

Square Root: 461.2352978686692

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

A coefficients of characteristic polynomials of A_n Cartan matrices times their transposes: t(n,m,d)=If[ n == m, 2, If[n == m - 1 || n == m + 1, -1, 0]]. M(d)=t(n,m,d)*Transpose[t(n,m,d)]. A158199

G.f. satisfies: A(x) = ∑_n>=0 xⁿ * (1 + x·A(x)^n-1)ⁿ. A300041

Numerators of continued fraction convergents to sqrt(934). A42806

a(n) = ∑_i=0..n (2ⁱ*(-1)ⁱ⁺ⁿ*C(n,i)*C(2·n+i-1,n-1)). A259554

Seventh convolution of Schroeder's (second problem) numbers A001003(n), n >= 0. A111995