Properties of the Number 23869

Twenty-Three Thousand Eight Hundred Sixty-Nine

Basics

Value: 23868 → 23869 → 23870

Parity: odd

Prime: Yes

Previous Prime: 23857

Next Prime: 23873

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 23869

Divisors: 1, 23869

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101110100111101

Octal: 56475

Duodecimal: 11991

Hexadecimal: 5d3d

Square: 569729161

Square Root: 154.49595463959565

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

Number of compositions of the integer n into positive parts that avoid a fixed pattern of three letters. A102726

Primes of the form ((p+1)/2)²+((p-1)/2), where p is prime. A163419

Least prime in A023200 (lesser of 4-twins) such that the distance to the next 4-twin is 6·n. A52351

Primes of the form p + (p² - 1)/8, where p is also prime. A165352

a(n)² is the start of the first occurrence of n consecutive perfect powers, all of which are squares with exponents equal to 2 (A111245). A340663

Primes of the form 4·n² + 2·n -1. A155737

Irregular triangle where row n lists primes q below the n-th primorial such that the multiplicative order of q mod the n-th primorial is 2. I.e., such primes q having the least k such that q^k (mod primorial(n)) == 1 is 2. A336015

Integers k such that the number of divisors of k² - 1 (A347191) sets a new record. A347192

Number of lines through at least 2 points of a 9 X n grid of points. A160849

Primes of the form (p²-1)/4-p where p are also primes. A165557