Properties of the Number 20633

Twenty Thousand Six Hundred Thirty-Three

Basics

Value: 20632 → 20633 → 20634

Parity: odd

Prime: No

Previous Prime: 20627

Next Prime: 20639

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 47 × 439

Divisors: 1, 47, 439, 20633

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101000010011001

Octal: 50231

Duodecimal: BB35

Hexadecimal: 5099

Square: 425720689

Square Root: 143.6419158880861

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

Composite numbers generated by the Euler polynomial x² + x + 41. A145292

Semiprimes generated by the Euler polynomial x² + x + 41. A228183

Numbers k for which A276085(k) is a multiple of 3125, where A276085 is fully additive with a(p) = p#/p. A377878

a(n) = ∑_k=1..n gcd(k,n)^n/gcd(k,n). A342424

Numbers n for which the numbers 6n+1, 3n+2, 6n+7 are all odd composite squarefree numbers, but none are semiprimes. A263510

Prime-generating polynomial: a(n) = 16·n² - 292·n + 1373. A181969

Wiener index of a benzenoid consisting of a chain of n hexagons characterized by the encoding s = 1133 (see the Gutman et al. reference, Sec. 5). A193399

Number of nX3 0..4 arrays with each element·equal to the number its horizontal and vertical neighbors equal to 0,0,1,1,1 for x=0,1,2,3,4. A197245

Number of (n+1) X (2+1) 0..2 arrays with no element unequal to a strict majority of its horizontal and vertical neighbors, with values 0..2 introduced in row major order. A231213

T(n,k)=Number of nXk 0..4 arrays with each element·equal to the number of its horizontal and vertical neighbors equal to 0,0,1,1,1 for x=0,1,2,3,4. A197250