Properties of the Number 73820

Seventy-Three Thousand Eight Hundred Twenty

Basics

Value: 73819 → 73820 → 73821

Parity: even

Prime: No

Previous Prime: 73819

Next Prime: 73823

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 5 × 3691

Divisors: 1, 2, 4, 5, 10, 20, 3691, 7382, 14764, 18455

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10010000001011100

Octal: 220134

Duodecimal: 36878

Hexadecimal: 1205c

Square: 5449392400

Square Root: 271.6983621592151

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 (n+1) X (4+1) 0..1 arrays with every 2 X 2 subblock diagonal minus antidiagonal sum nondecreasing horizontally and vertically. A253155

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 1), (0, 1, -1), (1, -1, 1), (1, 1, 0)}. A148955

T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with every 2X2 subblock diagonal minus antidiagonal sum nondecreasing horizontally and vertically. A253159

a(n) = n+1-i such that prime(i)*(n+1-i) is maximized (1 <= i <= n). A73820

Number of (n+1)X(2+1) 0..3 arrays with no 2X2 subblock having the minimum of its diagonal elements less than the absolute difference of its antidiagonal elements. A251169