Properties of the Number -23687

Twenty-Three Thousand Six Hundred Eighty-Seven

Basics

Value: -23688 → -23687 → -23686

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 23687

Divisors: 1, 23687

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

7925 Try Today's Challenge

Representations

Binary: -101110010000111

Octal: -56207

Duodecimal: -1185B

Hexadecimal: -5c87

Square: 561073969

Square Root: 153.9058153547162

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

G.f.: ∑_n>=0 xⁿ * (xⁿ + i)ⁿ / (1 + i·xⁿ⁺¹)ⁿ⁺¹, where i² = -1. A323675

Quadruple Hex-primes: let f(n) = A102489(n); then sequence lists primes p such that f(p), f(f(p)). f(f(f(p))) and f(f(f(f(p)))) are also primes. A237440

Position of the first occurrence of n in A337474. A337476

Odd coefficients in ∑_n>=0 xⁿ * (xⁿ + i)ⁿ / (1 + i·xⁿ⁺¹)ⁿ⁺¹, where i² = -1. A323676

Primes congruent to 35 mod 73. A154628

Primes in π (variant of A336520): a(n) is the smallest prime factor of A090897(n) that does not appear in earlier terms of a, or 1, if no such factor exists. A336519

Primes in π: a(n) is the smallest prime factor of A090897(n) that does not appear in earlier terms of A090897, or 1, if no such factor exists. A336520

Primes p such that p+2, (p²-1)/2+p and (p²+3)/2+3·p are also prime. A352948

Lesser of twin primes p such that p and p+2 are both in A115591. A367318

Primes of the form 6n² - 2n - 1. A99007