Properties of the Number 7822

Seven Thousand Eight Hundred Twenty-Two

Basics

Value: 7821 → 7822 → 7823

Parity: even

Prime: No

Previous Prime: 7817

Next Prime: 7823

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 3911

Divisors: 1, 2, 3911, 7822

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 1111010001110

Octal: 17216

Duodecimal: 463A

Hexadecimal: 1e8e

Square: 61183684

Square Root: 88.4420714366189

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

Positive integers n such that n¹¹ + 1 is semiprime. A105122

Numbers whose least quadratic nonresidue (A020649) is 13. A25025

T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000101 or 00001001. A260248

a(n) = ∑_i=1..n ∑_j=1..i (prime(i) - prime(j)). A62020

Denomination sequence. Start with the 0th and first coins of value 1 cent: a(0)=a(1)=1. Thereafter a(n), the value of the n-th coin (n>=2), is the number of ways to make change for n cents in earlier coins. The two one-cent coins are considered distinct. A151945

Expansion of ∏_k>=1 (1 + x^k²)^k². A291649

Expansion of (1-3·x²)/((1-2·x)*(1+3·x)). A91003

Number of tatami tilings of a 3 X n grid (with monomers allowed). A180970

Numbers m > 3 such that m-1, m, m+1 belong to A307002. A340748

Number of 1243-avoiding even Grassmannian permutations of size n. A361272