Properties of the Number 19556

Nineteen Thousand Five Hundred Fifty-Six

Basics

Value: 19555 → 19556 → 19557

Parity: even

Prime: No

Previous Prime: 19553

Next Prime: 19559

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 ² × 4889

Divisors: 1, 2, 4, 4889, 9778, 19556

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

603 Try Today's Challenge

Representations

Binary: 100110001100100

Octal: 46144

Duodecimal: B398

Hexadecimal: 4c64

Square: 382437136

Square Root: 139.84276885130672

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

Number of primes in range [2ⁿ+1, 2ⁿ⁺¹] whose binary expansion begins '10' (A080165). A95765

a(n) = 3ⁿ - (3·n² + n + 2)/2. A61983

a(1) = 1; for n>1, a(n) = smallest number which is not a sum or product or power of any subset of the numbers a(1) to a(n-1). A126326

Least k such that f(k) < 0, where f(1) = n and f(k) = f(k-1)*e^1/k - 1 for k > 1. A333342

Number of nX3 0..2 arrays with every element plus 1 mod 3 equal to some element at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) (1,-1) or (1,0), with upper left element zero. A278001

Number of n X 4 0..1 arrays with every element equal to 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero. A298926

Dimension of space of Jacobi forms of weight 4 and index n. A19556