Properties of the Number 72777

Seventy-Two Thousand Seven Hundred Seventy-Seven

Basics

Value: 72776 → 72777 → 72778

Parity: odd

Prime: No

Previous Prime: 72767

Next Prime: 72797

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 17 × 1427

Divisors: 1, 3, 17, 51, 1427, 4281, 24259, 72777

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10001110001001001

Octal: 216111

Duodecimal: 36149

Hexadecimal: 11c49

Square: 5296491729

Square Root: 269.77212606197844

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

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) nondecreasing in column and row directions, respectively. A203728

Numbers having four 7's in base 10. A43520

Numbers k such that k and k⁶ have no digits in common. A281148

Number of (n+1)X(n+1) 0..2 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) nondecreasing in column and row directions, respectively. A203720

Number of (n+1)X5 0..2 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) nondecreasing in column and row directions, respectively. A203724

Powers of squarefree numbers that are not squarefree. A72777

Numbers k such that 7·R_k+2 - 5·10^k is prime, where R_k = 11...1 is the repunit (A002275) of length k. A257028