Properties of the Number 12478

Twelve Thousand Four Hundred Seventy-Eight

Basics

Value: 12477 → 12478 → 12479

Parity: even

Prime: No

Previous Prime: 12473

Next Prime: 12479

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 17 × 367

Divisors: 1, 2, 17, 34, 367, 734, 6239, 12478

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11000010111110

Octal: 30276

Duodecimal: 727A

Hexadecimal: 30be

Square: 155700484

Square Root: 111.70496855556605

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

Products of any two not necessarily distinct terms of A237424. A254143

Remove in decimal representation of A254143(n) all repeated digits. A254323

Numbers k such that (k-1)*binomial(2k,k) + 1 is prime. A85793

a(0) = a(1) = 1; for n >= 2, a(n) = a(n-1) + a(n-2) - (n-1) if that number is positive and not already in the sequence, otherwise a(n) = a(n-1) + a(n-2) + (n-1). A117822

G.f. satisfies: A(x) = sqrt(1 + 2·x*A(x)⁴ + 3·x²*A(x)⁶). A222050

Consider the figure made up of a row of n adjacent congruent rectangles, with diagonals of all possible rectangles drawn; a(n) is the number of interior vertices where exactly four lines cross. A336490

Numerators of continued fraction convergents to sqrt(308). A41580

Number of 12-core partitions of n. A192061

Sums involving triangle A096815. A212422

Numbers k such that the continued fraction for sqrt(k) has period 76. A20415