Properties of the Number 78406

Seventy-Eight Thousand Four Hundred Six

Basics

Value: 78405 → 78406 → 78407

Parity: even

Prime: No

Previous Prime: 78401

Next Prime: 78427

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 × 197 × 199

Divisors: 1, 2, 197, 199, 394, 398, 39203, 78406

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011001001000110

Octal: 231106

Duodecimal: 3945A

Hexadecimal: 13246

Square: 6147500836

Square Root: 280.01071408072943

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

Numbers of the form 2·p*q where (p,q) is a twin prime pair. A71142

Square array, read by antidiagonals, where row n+1 is generated from row n by first removing terms at positions [(m+3)²/4 - 2] for m>=0 and then taking partial sums, starting with all 1's in row 0. A135878

G.f.: ∑_n>=0 (4 + xⁿ)ⁿ * xⁿ / (1-x)ⁿ⁺¹. A244617

Squarefree numbers which yield zero when their prime factors are xored together. A235488

a(n) = a(n-1) + a(n-2) + n (mod 3), with a(1)=a(2)=1. A81410

Expansion of exp(2x) - exp(0) + BesselI₀(2x). A81672

Number of ways to partition 4·n into distinct positive integers. A78406

Coordination sequence for lattice D*_16 (with edges defined by l₁ norm = 1). A35477