Properties of the Number -24087

Twenty-Four Thousand Eighty-Seven

Basics

Value: -24088 → -24087 → -24086

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 7 × 31 × 37

Divisors: 1, 3, 7, 21, 31, 37, 93, 111, 217, 259

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8109 Try Today's Challenge

Representations

Binary: -101111000010111

Octal: -57027

Duodecimal: -11B33

Hexadecimal: -5e17

Square: 580183569

Square Root: 155.19987113396712

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) = ∑_{i=1..n, j=1..n, gcd(i,j)=1} (n+1-i)*(n+1-j). A115004

Numbers that reach the fixed point 89 under iteration of f(x) = reverse(x) - maxdigit(x). A97155

Numbers n such that Maple 9.5, Maple 10, Maple 11 and Maple 12 give the wrong answers for the number of partitions of n. A110375

a(n) = 25·n² + 2·n. A154377

a(n) = ∑_{i∣n, j∣n, k∣n} i·j*k/lcm(i,j,k). A344135

Triangular array T(n,k) giving the number of labeled even graphs with n nodes and k edges for n >= 0 and 0 <= k <= n*(n-1-[0 == n mod 2])/2 (with no trailing zeros). A54669

Coefficients in the asymptotic expansions of modified Hankel functions h₁(z) and h₂(z), rounded to nearest integer. A2514

a(n) = A115004(2n+1). A331759

Irregular triangle read by rows: the right-hand side of the triangle in A349813. A349814

A110404(k)/k where k is the corresponding number == 1,3,7 or 9 (mod 10). A110405