Properties of the Number 20307

Twenty Thousand Three Hundred Seven

Basics

Value: 20306 → 20307 → 20308

Parity: odd

Prime: No

Previous Prime: 20297

Next Prime: 20323

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 3 × 7 × 967

Divisors: 1, 3, 7, 21, 967, 2901, 6769, 20307

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100111101010011

Octal: 47523

Duodecimal: B903

Hexadecimal: 4f53

Square: 412374249

Square Root: 142.50263155464884

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

Coefficient table of numerator polynomials of o.g.f.s for partial sums of powers of positive integers. A196837

Prime time numbers on 6-digit clocks: numbers of the form HMMSS where H, MM, SS are primes, H < 24, MM and SS < 60. A295014

Triangular array T(n,k) giving number of 2-connected graphs with n labeled nodes and k edges (n >= 3, n <= k <= n(n-1)/2). A123534

Numbers k such that x^k + x² + 1 is irreducible over GF(2). A57460

T(n,k) = number of ways to arrange k indistinguishable points on an n X n X n triangular grid so that no four points are in the same row or diagonal. A194485

Number of n X 2 0..1 arrays with every element equal to 1 or 2 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. A300344

Triangle read by rows: T(n,m) = number of graphs on n labeled nodes, with m components of size = order. Also number of graphs on n labeled nodes with m unicyclic components. A106239

Triangle read by rows: T(n,k) is the number of simple graphs on n labeled vertices with k edges and without endpoints, n >= 0, 0 <= k <= n*(n-1)/2. A369928

Triangle of coefficients, read by rows, where the n-th row forms the polynomial P(n,x) = {∑_k=1..n 1/(k+x)}*{∏_k=1..n (k+x)}. A74246

Number of length 4 arrays x(i), i=1..4 with x(i) in i..i+n and no value appearing more than 2 times. A250353