Properties of the Number 78408

Seventy-Eight Thousand Four Hundred Eight

Basics

Value: 78407 → 78408 → 78409

Parity: even

Prime: No

Previous Prime: 78401

Next Prime: 78427

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 ³ × 3 ⁴ × 11 ²

Divisors: 1, 2, 3, 4, 6, 8, 9, 11, 12, 18

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 10011001001001000

Octal: 231110

Duodecimal: 39460

Hexadecimal: 13248

Square: 6147814464

Square Root: 280.0142853498728

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(n) = (1/3)*(n² + 2·n + 3)*(n+1)². A14820

Positive octagonal numbers (A000567) that are squares (A000290) divided by 2. A259167

Number of ways to write n as an ordered sum of 6 squarefree numbers. A341066

Numbers with prime factorization p²*q³*r⁴ where p, q, and r are distinct primes. A190115

a(n) = n*(6·n² - 8·n + 3). A272378

Numbers n >= 0 such that n² + n*(n+1)/2 is a square. A220186

Denominators of n divided by the product of the anti-divisors of n. A93396

G.f. satisfies: A(x) = 1 + x/(A(x) + x·A'(x)). A177384

Triangle T(n,t) read by rows: number of rooted forests with n 2-colored nodes and t rooted trees. A271878

Square array T(n,k), n >= 1, k >= 1, read by antidiagonals, where T(n,k) = sqrt( ∏_a=1..n ∏_b=1..k-1 (4·sin((2·a-1)*π/(2·n))² + 4·sin(2·b*π/k)²) ). A341738