Properties of the Number 7428

Seven Thousand Four Hundred Twenty-Eight

Basics

Value: 7427 → 7428 → 7429

Parity: even

Prime: No

Previous Prime: 7417

Next Prime: 7433

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 619

Divisors: 1, 2, 3, 4, 6, 12, 619, 1238, 1857, 2476

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1110100000100

Octal: 16404

Duodecimal: 4370

Hexadecimal: 1d04

Square: 55175184

Square Root: 86.18584570566097

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 nXk 0..4 arrays with each element·equal to the number of its horizontal and vertical neighbors equal to 3,4,2,0,1 for x=0,1,2,3,4. A196863

a(n) = a(n-1) + 4·a(n-2) - 2·a(n-3), where a(0) = 2, a(1) = 4, a(2) = 8. A288476

Number of compositions (ordered partitions) of n into octagonal numbers (A000567). A322800

Number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 421", based on the 5-celled von Neumann neighborhood. A272049

The number of regions inside a vesica piscis formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts. A341877

Number of ways to write n as a nonnegative linear combination of an integer composition of n. A364908

Concatenation of first two digits and last two digits of n-th even perfect number. A138875

Number of lines through at least 2 points of a 10 X n grid of points. A160850

Triangle read by rows: T(n,k) is the number of series-reduced rooted trees whose leaves are sets of colors with a total of n elements using exactly k colors. A330763

Number of ways to label the vertices of the octahedron (or faces of the cube) with nonnegative integers summing to n, where labelings that differ only by rotation or reflection are considered the same. A97513