Properties of the Number 22126

Twenty-Two Thousand One Hundred Twenty-Six

Basics

Value: 22125 → 22126 → 22127

Parity: even

Prime: No

Previous Prime: 22123

Next Prime: 22129

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 × 13 × 23 × 37

Divisors: 1, 2, 13, 23, 26, 37, 46, 74, 299, 481

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101011001101110

Octal: 53156

Duodecimal: 1097A

Hexadecimal: 566e

Square: 489559876

Square Root: 148.74810923168064

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 partitions of n into parts of 23 kinds. A23021

Coefficient of x⁴ in (1-x-x²)^-n. A6504

Least k such that prime(n) is the smallest prime p for which k² + p² is also prime, or 0 if none. A263466

Number of ways in which n identical balls can be distributed among 6 boxes in a row such that each pair of adjacent boxes contains at least 4 balls. A5339

a(n) = a(n-1) + ∑_0<k<=n/5 a(n-5k) with a(0)=1. A113444

Squarefree numbers k such that k² is abundant, and d² is nonabundant for any proper divisor d of k. A381741

a(1)=1; a(n) = ∑_{1<=k<n, gcd(k,n(n+1)/2)=1} a(k). A125597

Number of 4-bead necklaces labeled with numbers -n..n not allowing reversal, with sum zero. A208598

Numbers n such that the decimal digits of n-φ(n) are a permutation of those of n. A273799

a(n) = ∑_{i=1..n, j=1..n, gcd(i,j)=1} i. A333297