Properties of the Number 57840

Fifty-Seven Thousand Eight Hundred Forty

Basics

Value: 57839 → 57840 → 57841

Parity: even

Prime: No

Previous Prime: 57839

Next Prime: 57847

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 ⁴ × 3 × 5 × 241

Divisors: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1110000111110000

Octal: 160760

Duodecimal: 29580

Hexadecimal: e1f0

Square: 3345465600

Square Root: 240.49948024891862

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 step cyclic shifted sequences using a maximum of three different symbols. A56411

a(n) = n*(n+1)*(n*(n+1)+1). A169938

Largest·such that 1/x + 1/y + 1/z = 1/n. A82986

z-value of the lexicographically first solution (x,y,z) of 4/n = 1/x + 1/y + 1/z with 0 < x < y < z all integers, or 0 if there is no such solution. Corresponding·and y values are in A257839 and A257840. A257841

Alexandrian integers: numbers of the form n = p·q*r such that 1/n = 1/p - 1/q - 1/r for some integers p,q,r. A147811

Smallest m such that A064672(m) = n. A64689

Boustrophedon transform of the continued fraction of e (A003417). A80408

a(n) = (p+2)!/p! where p is the n-th lesser twin prime, A001359(n). A126251

a(n) = n⁴ + 6n³ + 14n² + 15n + 6. A176780

Tropical version of the degree-6 recurrence x(n+6)*x(n) = (x(n+5)*x(n+1))² + x(n+4)²*x(n+3)⁴*x(n+2)². A220839