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Properties of the Number 19550

Nineteen Thousand Five Hundred Fifty

Basics

Value: 19549 → 19550 → 19551

Parity: even

Prime: No

Previous Prime: 19543

Next Prime: 19553

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 5 2 × 17 × 23

Divisors: 1, 2, 5, 10, 17, 23, 25, 34, 46, 50

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100110001011110

Octal: 46136

Duodecimal: B392

Hexadecimal: 4c5e

Square: 382202500

Square Root: 139.82131454109563

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

Fifth column (m=4) of (1,3)-Pascal triangle A095660. A95661
Row sums of A075652. A75650
Expansion of ∏k>=1 (1 - x4·k)4·k / (1 - xk)k. A285215
Numbers m such that the product m*(m+1) has a set of prime divisors, from greatest down to 2, that is missing exactly two prime divisors. A391970
a(n) = pg(n, 3) + pg(n, 4) + ... + pg(n, n) where pg(n, m) is the m-th n-th-order polygonal number. A245679
Number of standard Young tableaux of shape [3n,3]. A215543
Number of (n+1) X (n+1) -2..2 symmetric matrices with every 2 X 2 subblock having sum zero and two or three distinct values. A211115
a(n) = M(n!), the value of Mertens's function at the n-th factorial. A87989
Triangle read by rows: T(n,k) is the number of hill-free Schroeder paths of length 2n that have k weak ascents (1<=k<=n-1 for n>=2; k=1 for n=1). A Schroeder path of length 2n is a lattice path from (0,0) to (2n,0) consisting of U=(1,1), D=(1,-1) and H=(2,0) steps and never going below the x-axis. A hill is a peak at height 1. A weak ascent in a Schroeder path is a maximal sequence of consecutive U and H steps. A114691
Partial sums of economical numbers A046759. A172460