Properties of the Number 21074

Twenty-One Thousand Seventy-Four

Basics

Value: 21073 → 21074 → 21075

Parity: even

Prime: No

Previous Prime: 21067

Next Prime: 21089

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 × 41 × 257

Divisors: 1, 2, 41, 82, 257, 514, 10537, 21074

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101001001010010

Octal: 51122

Duodecimal: 10242

Hexadecimal: 5252

Square: 444113476

Square Root: 145.16886718577092

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

a(n) = floor(n*φ¹⁴), where φ is the golden ratio, A001622. A4929

Numbers k such that Bernoulli number B_k has denominator 498. A282773

Sum of fourth powers of unitary divisors. A34678

Number of (w,x,y) with all terms in {0,...,n} and the numbers w,x,y,|w-x|,|x-y| distinct. A213490

Number of 2 X 2 matrices with all elements in 0..n such that the sum of the elements is prime. A281550

a(1) = 15; for n > 1, a(n)² is the smallest square that begins with a(n-1) in base 6. A336251

Expansion of 1/((1-x)(1-2x)(1-4x)(1-5x)). A21074