Properties of the Number 56840

Fifty-Six Thousand Eight Hundred Forty

Basics

Value: 56839 → 56840 → 56841

Parity: even

Prime: No

Previous Prime: 56827

Next Prime: 56843

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 ³ × 5 × 7 ² × 29

Divisors: 1, 2, 4, 5, 7, 8, 10, 14, 20, 28

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101111000001000

Octal: 157010

Duodecimal: 28A88

Hexadecimal: de08

Square: 3230785600

Square Root: 238.41140912296962

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

Triangle read by rows, defined by T(n,k)=binomial(n,k)*|Stirling1(n,k)|, 0<=k<=n. A187555

Diagonal sums of triangle A185384. A208481

Nonnegative values·of solutions (x, y) to the Diophantine equation x² + (x+84847)² = y². A201917

Number of rounded n-celled polyominoes. A56840

Pentagonal numbers (A000326) that are the sum of six consecutive pentagonal numbers. A257715