Properties of the Number -16856

Sixteen Thousand Eight Hundred Fifty-Six

Basics

Value: -16857 → -16856 → -16855

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 ³ × 7 ² × 43

Divisors: 1, 2, 4, 7, 8, 14, 28, 43, 49, 56

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100000111011000

Octal: -40730

Duodecimal: -9908

Hexadecimal: -41d8

Square: 284124736

Square Root: 129.83065893693984

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

Triangle of D-analogs of Stirling numbers of first kind. A39762

Triangle of D-analogs of Stirling numbers of first kind, rows reversed. A39763

Matrix inverse of A186432. A186433

Number of cyclic arrangements of S={2,3,...,n+1} such that the difference of any two neighbors is greater than 1, and a divisor of their sum. A242532

Number of sums S of distinct positive integers satisfying S <= n. A26906

Triangle read by rows: T(n,k), n >=1, 0 <= k <= C(n,k), = number of n X n symmetric positive definite matrices with 2's on the main diagonal and 1's and 0's elsewhere and with k 1's above the diagonal. A80858

Coefficients in q-expansion of (E₂²*E₄ - 2·E₂*E₆ + E₄²)/1728, where E₂, E₄, E₆ are the Eisenstein series shown in A006352, A004009, A013973, respectively. A282099

Sums of distinct powers of 7. A33044

T(n,k)=Number of (n+1)X(k+1) arrays of permutations of 0..(n+1)*(k+1)-1 with each element having index change (+-,+-) 0,0 1,1 or 1,2. A263964

Sums of two powers of 7. A55258