Properties of the Number 78200

Seventy-Eight Thousand Two Hundred

Basics

Value: 78199 → 78200 → 78201

Parity: even

Prime: No

Previous Prime: 78193

Next Prime: 78203

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ³ × 5 ² × 17 × 23

Divisors: 1, 2, 4, 5, 8, 10, 17, 20, 23, 25

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 10011000101111000

Octal: 230570

Duodecimal: 39308

Hexadecimal: 13178

Square: 6115240000

Square Root: 279.64262908219126

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

4-dimensional figurate numbers: a(n) = (6·n-2)*binomial(n+2,3)/4. A2419

Number of ways to place 2 nonattacking kings on an n X n toroidal board. A179403

Number of ways to place 2 nonattacking knights on an n X n toroidal board. A172529

a(n) = 1 + (9960 + (6804 + (2464 + (735 + (175 + (21 + n)*n)*n)*n)*n)*n)*n/5040. A145129

Expansion of x*(1 + 4·x + x²)/((1 - x)⁵*(1 + x)⁴). A290055

a(1)=11, If a(n-1)=abcde..., where a,b,c,d,e... are the digits, then a(n)=abcde...+a·bcde...+ab·cde...+abc·de...+abcd·e...+.... A108722

Class 1+ primes: primes of the form 2ⁱ*3^j - 1 with i, j >= 0. A5105

a(n) = A078199(n)/n; i.e., smallest k such that frequency of each occurring digit in k·n is the same. A78200