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Properties of the Number -19481

Nineteen Thousand Four Hundred Eighty-One

Basics

Value: -19482 → -19481 → -19480

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 7 × 11 2 × 23

Divisors: 1, 7, 11, 23, 77, 121, 161, 253, 847, 1771

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100110000011001

Octal: -46031

Duodecimal: -B335

Hexadecimal: -4c19

Square: 379509361

Square Root: 139.57435294494474

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

Triangular array T(n, k) read by rows: denominators of the coefficients for the iterated exponential Fr(x) = x + ∑n>=1 xn+1*∑k=1..n rn+1-k*T(n, k)/A381931(n, k) with F1(x) = exp(x)-1 and F2(x) = exp(exp(x)-1)-1. A381932
4-dimensional pyramidal numbers: a(n) = n2*(n2-1)/12. A2415
a(n) = (2·n-1)*(13·n2-13·n+6)/6. A63493
a(n) = (2/(n-1))*a(n-1) + ((n+5)/(n-1))*a(n-2) with a(0)=0 and a(1)=1. A96338
a(n) = (3·n+1)*(4·n+1). A33577
Composites whose prime factorization in base 3 is an anagram of the number in base 3. A260047
Fifth column (m=4) of (1,6)-Pascal triangle A096956. A96958
Numbers k such that gcd(3k,8k+1) = 3 but k does not divide the numerator of B(2k) (the Bernoulli numbers). A70193
a(n) = a(n-1)+a(n-2)+a(n-3)+4·n-8 with a(0)=0, a(1)=0 and a(2)=1. A180668
a(n) = (∑k=0..n-1(540·k + 137)*3136n-1-k*C(2·k, k)*Tk(2, 81)*Tk(14, 81))/ (2·n*C(2·n, n)), where Tk(b, c) denotes the coefficient of xk in the expansion of (x2 + b·x + c)k. A336982