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Properties of the Number 16281

Sixteen Thousand Two Hundred Eighty-One

Basics

Value: 16280 → 16281 → 16282

Parity: odd

Prime: No

Previous Prime: 16273

Next Prime: 16301

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 5 × 67

Divisors: 1, 3, 9, 27, 67, 81, 201, 243, 603, 1809

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: Yes

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 11111110011001

Octal: 37631

Duodecimal: 9509

Hexadecimal: 3f99

Square: 265070961

Square Root: 127.59702190882042

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

List of different composite numbers in Pascal-like triangles with index of asymmetry y = 1 and index of obliqueness z = 0 or z = 1. A141065
a(n) = (2·n + 1)*(5·n + 1). A33571
Numbers k such that k![4] + 2 is prime, where k![4] = A007662(k) = quadruple factorial. A283553
Numbers that are divisible by the product of their factorial base digits (A208575). A286590
The first of two consecutive heptagonal numbers the sum of which is equal to the sum of two consecutive primes. A298465
Odd heptagonal numbers (A000566). A14637
Sums of 5 distinct powers of 5. A38477
Number of Pythagorean quadruples mod n; i.e., number of solutions to w2 + x2 + y2 = z2 mod n. A96018
Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 513", based on the 5-celled von Neumann neighborhood. A288811
Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 587", based on the 5-celled von Neumann neighborhood. A289533