Properties of the Number 20403

Twenty Thousand Four Hundred Three

Basics

Value: 20402 → 20403 → 20404

Parity: odd

Prime: No

Previous Prime: 20399

Next Prime: 20407

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 2267

Divisors: 1, 3, 9, 2267, 6801, 20403

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100111110110011

Octal: 47663

Duodecimal: B983

Hexadecimal: 4fb3

Square: 416282409

Square Root: 142.83907028540895

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

Expansion of (1/x) * Series_Reversion( x * (1-x²/(1-x))² ). A368957

Number of Carlitz compositions of n that either have length 1, or have length greater than or equal to 2 and are palindromic if we exclude the first part. A291941

Consecutive states of the linear congruential pseudo-random number generator 20403·s mod 2¹⁵ when started at s=1. A384196

Lengths of runs of identical terms in A353710. A353718

Numbers of the form x² + y² + z² = φ(x·y*z) + σ(x·y*z). A173792

Numbers k such that concatenating k and the sum of the digits of k raised to their own power (A045503) produces a square. A108406

Number of Hamiltonian cycles in P₇ X P_2n. A145416

Numbers k such that the continued fraction for sqrt(k) has period 64. A20403

Number of directed Hamiltonian walks from NW to SW corners of a 7 X (2·n+1) grid. A333603