Properties of the Number 84540

Eighty-Four Thousand Five Hundred Forty

Basics

Value: 84539 → 84540 → 84541

Parity: even

Prime: No

Previous Prime: 84533

Next Prime: 84551

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 5 × 1409

Divisors: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 10100101000111100

Octal: 245074

Duodecimal: 40B10

Hexadecimal: 14a3c

Square: 7147011600

Square Root: 290.75763102625524

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

House numbers: a(n) = (n+1)³ + ∑_i=1..n i². A51662

a(n) = ∑_k=0..n binomial(k+6,6) * binomial(k,n-k)². A377158

a(n) = min{ m : ∑_{n <= i <= m} 1/p_i > 1}, where p_i is the i-th prime = A000040(i). A92325

Structured pentagonal hexacontahedral numbers (vertex structure 16). A100169

a(n) is the algebraic order of the elliptic λ function λ^*(n), where λ^*(n) is the value of k_n such that K'(k_n)/K(k_n) = sqrt(n), K(k) is a complete elliptic function and K'(k) is the complementary function. A84540