Properties of the Number 20235

Twenty Thousand Two Hundred Thirty-Five

Basics

Value: 20234 → 20235 → 20236

Parity: odd

Prime: No

Previous Prime: 20233

Next Prime: 20249

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 19 × 71

Divisors: 1, 3, 5, 15, 19, 57, 71, 95, 213, 285

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100111100001011

Octal: 47413

Duodecimal: B863

Hexadecimal: 4f0b

Square: 409455225

Square Root: 142.24978031617482

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(n) = n*(n + 1)*(n + 2)*(3·n + 17)/24. A241765

Numbers k such that k³ divides 14^k² + 1. A177814

Sum of all odd numbers in Collatz (3x+1) trajectory of n. A213916

T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 2, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero. A316932

G.f. A(x) satisfies 3·x = ∑_n=-oo..+oo (-1)ⁿ * x^3·n * (A(x) + xⁿ)^3·n with A(0) = 1. A380682

T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 2, 3, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero. A317703

Fixed points of A275957; numbers n for which A060125(n) = A225901(n). A275843

Products of two distinct tribonacci numbers > 1. A274433

Denominators of continued fraction convergents to sqrt(567). A42087

a(1) = 1, and for each k >=2, a(k) is the smallest number n such that n/sin(n) > a(k)/sin(a(k)), so that a(1)/sin(a(1)) > a(2)/sin(a(2)) > ... > a(k)/sin(a(k)) > ... A172445