Properties of the Number 20494

Twenty Thousand Four Hundred Ninety-Four

Basics

Value: 20493 → 20494 → 20495

Parity: even

Prime: No

Previous Prime: 20483

Next Prime: 20507

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 10247

Divisors: 1, 2, 10247, 20494

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101000000001110

Octal: 50016

Duodecimal: BA3A

Hexadecimal: 500e

Square: 420004036

Square Root: 143.15725619052637

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

Main diagonal of semiprime power sum array. A123177

Fibonacci iteration starting with (1, a(n)) leads to a "nine digits anagram". A34587

a(n) = 20·2ⁿ + 14. A305061

Expansion of 1/(1+2·x²-x³). A77965

Expansion of 1/(1+2·x²+x³). A77967

Let s(n,j) be ∑_i=1..j (prime(primepi(n) + i) mod n). Numbers n such that there exists j with s(n,j) = n. A274423

a(n) = 1 + n⁴ + n⁶ + n⁹. A123657

Number of nX3 binary arrays with each 1 adjacent to exactly two other 1s. A183324

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 92 ones. A31860

a(n) = (n-2)*2^n-1 + n + 2. A343291