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Properties of the Number 8722

Eight Thousand Seven Hundred Twenty-Two

Basics

Value: 8721 → 8722 → 8723

Parity: even

Prime: No

Previous Prime: 8719

Next Prime: 8731

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 7 2 × 89

Divisors: 1, 2, 7, 14, 49, 89, 98, 178, 623, 1246

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001000010010

Octal: 21022

Duodecimal: 506A

Hexadecimal: 2212

Square: 76073284

Square Root: 93.39164844888434

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 unlabeled rooted phylogenetic trees with n (leaf-) nodes such that for each inner node all children are either leaves or roots of distinct subtrees. A300660
When expressed in base 4 and then interpreted in base 6, is a multiple of the original number. A62921
25-gonal numbers: a(n) = n*(23·n-21)/2. A255184
Number of heptagons that can be formed with perimeter n. A288253
Partial sums of the partition function (A000041), with the last term subtracted. Also the sum of the row of the character table for Sn corresponding to the partition n-1,1 for n>1. Also the sum over all partitions λ of n of one less than the number of 1's in λ. A58884
T(n,k) is the number of (n+1) X (k+1) 0..2 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 2 (constant-stress 1 X 1 tilings). A234266
Product of n-th prime and n-th prime written backwards. A133019
The 360 degree spoke (or ray) of a hexagonal spiral of Ulam. A244803
a(n) = prime(n)*(prime(n+1) + 1). A123134
Least k such that prime(n) is the smallest prime p for which k2 + p2 is also prime, or 0 if none. A263466