Properties of the Number 19673

Nineteen Thousand Six Hundred Seventy-Three

Basics

Value: 19672 → 19673 → 19674

Parity: odd

Prime: No

Previous Prime: 19661

Next Prime: 19681

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 103 × 191

Divisors: 1, 103, 191, 19673

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100110011011001

Octal: 46331

Duodecimal: B475

Hexadecimal: 4cd9

Square: 387026929

Square Root: 140.26047197981333

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

Triangle read by rows: Eulerian numbers of type B, T(n,k) (1 <= k <= n) given by T(n, 1) = T(n,n) = 1, otherwise T(n, k) = (2·n - 2·k + 1)*T(n-1, k-1) + (2·k - 1)*T(n-1, k). A60187

A column and diagonal of A060187. A60188

Triangle formed by coefficients of the expansion of p(x, n), where p(x,n) = (1 + 2·x - x²)^{n + 1}*∑_{j >= 0} (j+1)ⁿ*(-2·x + x²)^j. A156901

Number of unlabeled maximal independent sets in the n-cycle graph. A127687

Triangle T(n,k) = (2·n-k-1)*T(n-1,k-1) + (k+1)*T(n-1,k), with T(n,1) = T(n,n) = 1, 1 <= k <= n, read by rows. A156139

Monotonic ordering of nonnegative differences 3ⁱ-10^j, for 40>= i>=0, j>=0. A192159

Triangle read by rows: real part of Lerch φ expansion of p(x,n) = 2ⁿ*(1 - i·x)ⁿ⁺¹ * LerchPhi(i·x, -n, 1/2). A143196

Greatest number (in decimal representation) with n nonprime substrings in base-3 representation (substrings with leading zeros are considered to be nonprime). A217113

Number of nonequivalent minimal total dominating sets in the n-cycle graph up to rotation. A302918

Triangle read by rows: T(n, k) = (-1)^n+k * A060187(n+1, k+1). A138076