Properties of the Number 16489

Sixteen Thousand Four Hundred Eighty-Nine

Basics

Value: 16488 → 16489 → 16490

Parity: odd

Prime: No

Previous Prime: 16487

Next Prime: 16493

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 11 × 1499

Divisors: 1, 11, 1499, 16489

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100000001101001

Octal: 40151

Duodecimal: 9661

Hexadecimal: 4069

Square: 271887121

Square Root: 128.40950120610233

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) = (2·n - 1)*(11·n² - 11·n + 6)/6. A63492

Number of pairwise coprime strict compositions of n, where a singleton is always considered coprime. A337562

Number of positive integers <= 2ⁿ of form x² + 12 y². A21

a(n) = (2ⁿ⁺¹ + n² + n)/2. A132109

Denominators of continued fraction convergents to sqrt(726). A42399

Semiprimes in A103378. A103398

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

Composite numbers that contain only nonprime digits and whose prime factors contain only nonprime digits. A383934

G.f.: 1/(1-x) = ∑_n>=0 a(n) * xⁿ*(1-x)ⁿ / ∏_k=1..n-1 (1 + k·x). A185054

Number of length n binary words that contain an even number of 0's or exactly two 1's. A236291