Properties of the Number 7828

Seven Thousand Eight Hundred Twenty-Eight

Basics

Value: 7827 → 7828 → 7829

Parity: even

Prime: No

Previous Prime: 7823

Next Prime: 7829

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 19 × 103

Divisors: 1, 2, 4, 19, 38, 76, 103, 206, 412, 1957

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 1111010010100

Octal: 17224

Duodecimal: 4644

Hexadecimal: 1e94

Square: 61277584

Square Root: 88.47598544237866

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 ordered biquanimous partitions of 2n. A64914

Numbers that are the sum of eight fourth powers in five or more ways. A345580

Numbers that are the sum of eight fourth powers in exactly five ways. A345837

Number of ways to place m nonattacking queens on an m X n board, 1 <= m <= n (triangular array). A269133

a(n) = prime(prime(A028815(n) - 1) - 1) - 1. A141136

The profiles of the backtrack tree for the n queens problem, triangle read by rows. A319284

Sums of members of groups in A076063. A76066

Number of ways to place 8 nonattacking queens on an 8 X n board. A172449

Number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 371", based on the 5-celled von Neumann neighborhood. A271454

Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 595", based on the 5-celled von Neumann neighborhood. A283213