Properties of the Number 22472

Twenty-Two Thousand Four Hundred Seventy-Two

Basics

Value: 22471 → 22472 → 22473

Parity: even

Prime: No

Previous Prime: 22469

Next Prime: 22481

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ³ × 53 ²

Divisors: 1, 2, 4, 8, 53, 106, 212, 424, 2809, 5618

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 101011111001000

Octal: 53710

Duodecimal: 11008

Hexadecimal: 57c8

Square: 504990784

Square Root: 149.90663761154806

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

Numbers of the form p² * q³, where p,q are distinct primes. A143610

Matula-Goebel numbers of series-reduced powerful rooted trees. A317705

Cupolar numbers: a(n) = (n+1)*(5·n² + 7·n + 3)/3. A96000

T(n,k)=Number of (n+1)X(k+1) 0..7 arrays with every 2X2 subblock having the sum of the squares of all six edge and diagonal differences equal to 59 (59 maximizes T(1,1)). A233859

Number of disconnected regular simple graphs on n vertices with girth exactly 3. A210713

First occurrence of exactly n 0's in the binary expansion of sqrt(2). A84187

Sum of the first n twin prime pairs. A86169

Nontotients (A005277) that are the product of two totients (A002202). A329872

a(n) = ∑_{k = 0..n-1} (-1)^k*C(2·n-1,k)*C(n-1,k), n>0. A252355

Primitive values n such that the square with opposite corners (0,0) and (n,n) contains a point (x,y) with integer coordinates, with 0 < x,y < n, at an integer distance from three of the four corners. A260549