Properties of the Number -20269

Twenty Thousand Two Hundred Sixty-Nine

Basics

Value: -20270 → -20269 → -20268

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 20269

Divisors: 1, 20269

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

7925 Try Today's Challenge

Representations

Binary: -100111100101101

Octal: -47455

Duodecimal: -B891

Hexadecimal: -4f2d

Square: 410832361

Square Root: 142.36923825040296

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

Numbers k such that (11^k - 5^k)/6 is prime. A128347

Luhn primes: primes p such that p + (p reversed) is also a prime. A61783

Primes p whose period of reciprocal equals (p-1)/9. A56214

a(0) = 13; for n > 0, a(n) is the greatest prime factor of PreviousPrime(a(n-1))*a(n-1)-1 where PreviousPrime(prime(k))=prime(k-1). A31442

Primes congruent to 34 mod 71. A154624

Pairs of consecutive primes {p,q} for which the numbers of distinct residues of all factorials mod p and mod q coincide. A210242

Number of set partitions of [n] such that all absolute differences between least elements of consecutive blocks and between consecutive elements within the blocks are not larger than seven. A287586

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 88 ones. A31856

Primes from merging of 5 successive digits in decimal expansion of exp(2). A105001

Primes congruent to 32 mod 59. A142759