Properties of the Number 20278

Twenty Thousand Two Hundred Seventy-Eight

Basics

Value: 20277 → 20278 → 20279

Parity: even

Prime: No

Previous Prime: 20269

Next Prime: 20287

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 10139

Divisors: 1, 2, 10139, 20278

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100111100110110

Octal: 47466

Duodecimal: B89A

Hexadecimal: 4f36

Square: 411197284

Square Root: 142.40084269413578

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

Number of solutions to x² + y² + z² + w² <= n², where x, y, z, w are positive odd integers. A349611

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 510", based on the 5-celled von Neumann neighborhood. A272700

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 771", based on the 5-celled von Neumann neighborhood. A273500

Consecutive states of the linear congruential pseudo-random number generator (1291·s + 4621) mod 21870 when started at s=1. A385337

Numbers k such that 8·10^k - 99 is prime. A280016

Number of numbers the sum of whose digits' factorials equals n. A333499

Strong pseudoprimes to base 52. A20278