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Properties of the Number 273

Two Hundred Seventy-Three

Basics

Value: 272 → 273 → 274

Parity: odd

Prime: No

Previous Prime: 271

Next Prime: 277

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 3 × 7 × 13

Divisors: 1, 3, 7, 13, 21, 39, 91, 273

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100010001

Octal: 421

Duodecimal: 1A9

Hexadecimal: 111

Square: 74529

Square Root: 16.522711641858304

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) = binomial(3·n,n)/(2·n+1) (enumerates ternary trees and also noncrossing trees). A1764
Moser-de Bruijn sequence: sums of distinct powers of 4. A695
Central polygonal numbers: a(n) = n2 - n + 1. A2061
The squarefree numbers ordered lexicographically by their prime factorization (with factors written in decreasing order). a(n) = ∏k in I prime(k+1), where I is the set of indices of nonzero binary digits in n = ∑k in I 2k. A19565
Lucky numbers. A959
Numbers whose base-3 representation contains no 2. A5836
Binary palindromes: numbers whose binary expansion is palindromic. A6995
Sphenic numbers: products of 3 distinct primes. A7304
The Golden Triangle: T(n,k) = A001654(k) for n>=0 and 0<=k<=n. A180662
Triangle formed from even-numbered columns of triangle of expansions of powers of·in terms of Chebyshev polynomials Un(x). A39599