Properties of the Number 23987

Twenty-Three Thousand Nine Hundred Eighty-Seven

Basics

Value: 23986 → 23987 → 23988

Parity: odd

Prime: No

Previous Prime: 23981

Next Prime: 23993

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 17 ² × 83

Divisors: 1, 17, 83, 289, 1411, 23987

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101110110110011

Octal: 56663

Duodecimal: 11A6B

Hexadecimal: 5db3

Square: 575376169

Square Root: 154.87737084545307

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

Molien series for invariants of finite Coxeter group A₁₂. A266781

Beginning with 3, least number such that concatenation of first n terms and its digit reversal both are primes. A111382

Number of compositions of n with exactly two occurrences of the largest part. A243737

Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-2) + 3, where a(0) = 1, a(1) = 2, b(0) = 3. A294535

Number of nondecreasing strings of numbers x(i=1..n) in -6..6 with sum x(i)³ equal to 0. A188274

Numbers k such that k | 10^k + 9^k + 8^k + 7^k. A57214

Sum of exponents of primes in C(5n,3n) - sum of exponents of primes in C(3n,2n). A23987