Properties of the Number 19416

Nineteen Thousand Four Hundred Sixteen

Basics

Value: 19415 → 19416 → 19417

Parity: even

Prime: No

Previous Prime: 19403

Next Prime: 19417

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 ³ × 3 × 809

Divisors: 1, 2, 3, 4, 6, 8, 12, 24, 809, 1618

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100101111011000

Octal: 45730

Duodecimal: B2A0

Hexadecimal: 4bd8

Square: 376981056

Square Root: 139.34130758680286

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

Coordination sequence for hexagonal close-packing. A7899

T(n,k)=Number of nXk binary arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling two not more than once. A268995

Numbers k such that the largest unitary divisor of σ(k) that is coprime with A003961(k) is also a unitary divisor of k. A351551

Becomes prime after n iterations of f(x) = σ(x)-1 (least inverse of A039655). A39656

a(n) = 1728·n - 1320. A157263

Numbers n such that A002088(n) < 3n²/π². A285022

Expansion of 1 / ∑_k>=0 (-x)^{k*(3·k - 1}/2). A308806

θ series of 8-d 6-modular lattice G₂ tensor F₄ (or A₂ tensor D₄) with det 1296 and minimal norm 4 in powers of q². A28977

Inverse binomial transform of [0, A133474]. A139797

Number of ordered triples (w,x,y) with all terms in {1,...,n} and w²>2x²+2y². A211633