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Properties of the Number 16728

Sixteen Thousand Seven Hundred Twenty-Eight

Basics

Value: 16727 → 16728 → 16729

Parity: even

Prime: No

Previous Prime: 16703

Next Prime: 16729

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 3 × 3 × 17 × 41

Divisors: 1, 2, 3, 4, 6, 8, 12, 17, 24, 34

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100000101011000

Octal: 40530

Duodecimal: 9820

Hexadecimal: 4158

Square: 279825984

Square Root: 129.33676971379793

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

Numbers n for which A324108(n) = A324054(n-1) and which are neither prime powers nor of the form 2i * pj, where p is an odd prime, with either exponent i or j > 0. A324111
Larger of semi-unitary amicable numbers pair: numbers (m, n) such that susigma(m) = susigma(n) = m + n, where susigma(n) is the sum of the semi-unitary divisors of n (A322485). A322542
Largest denominator used in the Egyptian fraction representation of n/(n + 1) by the greedy algorithm. A100695
Irregular array T(n,k) of the numbers of non-extendable (complete) non-self-adjacent simple paths ending at each of a minimal subset of nodes within a square lattice bounded by rectangles with nodal dimensions n and 5, n >= 2. A214359
Triangle of rooted planar maps. A46651
Values of m such that N = (am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,57. A65697
Unitary-σ σ multiply perfect numbers: numbers k such that A061765(k) = m·k for some integer m. A45795
Triangle read by rows: T(n,k) is the number of nonseparable planar maps with r·n edges and a fixed outer face of r·k edges which are invariant under a rotation of 1/r for any r >= 2 (independent of actual value of r). A91599
Numbers m such that A049417(A049417(m)) = k·m for some k where A049417 is the infinitary σ function. A318182
Larger of modified exponential amicable pairs. A323759