Properties of the Number 78489

Seventy-Eight Thousand Four Hundred Eighty-Nine

Basics

Value: 78488 → 78489 → 78490

Parity: odd

Prime: No

Previous Prime: 78487

Next Prime: 78497

Digit Sum: 36

Digital Root: 9

Palindrome: No

Factorization: 3 ⁵ × 17 × 19

Divisors: 1, 3, 9, 17, 19, 27, 51, 57, 81, 153

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10011001010011001

Octal: 231231

Duodecimal: 39509

Hexadecimal: 13299

Square: 6160523121

Square Root: 280.15888349292084

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 nonseparable toroidal tree-rooted maps with n + 2 edges and n + 1 vertices. A6414

a(n) = a(n-1) + 2·a(floor(n/2)) if n > 0, otherwise 1. A58039

Denominators of continued fraction convergents to sqrt(97). A41175

Expansion of G(x)⁴ where G(x) = g.f. for A291096. A291285

Number of n X 2 0..1 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly one mistake. A278670

a(n) = ∑_{k=0..floor(n/3)} binomial(k+1,3·n-9·k+1). A392675

Base 8 digits are, in order, the first n terms of the periodic sequence with initial period 2,3,1. A37643

Number of divisors of (n!)ⁿ (A036740). A62960

Number of configurations of the 5 X 5 variant of sliding block 15-puzzle ("24-puzzle") that require a minimum of n moves to be reached, starting with the empty square in one of the corners. A90031

a(n)=j such that binomial(n,j)<binomial(n-1,j-2). A78489