Properties of the Number 78928

Seventy-Eight Thousand Nine Hundred Twenty-Eight

Basics

Value: 78927 → 78928 → 78929

Parity: even

Prime: No

Previous Prime: 78919

Next Prime: 78929

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 2 ⁴ × 4933

Divisors: 1, 2, 4, 8, 16, 4933, 9866, 19732, 39464, 78928

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10011010001010000

Octal: 232120

Duodecimal: 39814

Hexadecimal: 13450

Square: 6229629184

Square Root: 280.941275002446

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

a(0) = 1; a(n) = ∑_{k=0..floor((n-1)/2)} 3^k * a(k) * a(n-2·k-1). A352007

a(1)=1, a(n) is the smallest integer > a(n-1) such that the sum of elements of the simple continued fraction for S(n)=1/a(1)+1/a(2)+...+1/a(n) equals n³. A71971

G.f. A(x) satisfies: [xⁿ] A(x)^2·n+1 / (x·A(x)²)' = 0 for n>1. A300627

Smallest p for which there are exactly n primitive Pythagorean triangles with perimeter p; i.e., smallest p such that A070109(p) = n. A78928