Properties of the Number -201726

Two Hundred One Thousand Seven Hundred Twenty-Six

Basics

Value: -201727 → -201726 → -201725

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 7 × 1601

Divisors: 1, 2, 3, 6, 7, 9, 14, 18, 21, 42

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4938 Try Today's Challenge

Representations

Binary: -110001001111111110

Octal: -611776

Duodecimal: -988A6

Hexadecimal: -313fe

Square: 40693379076

Square Root: 449.13917664795173

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

Third differences of seventh powers (A001015). A255181

G.f. A(x,y) satisfies: A(x,y) = x * (1 + y·A(x,y)*A'(x,y)) / (1 + A(x,y)*A'(x,y)), where A'(x,y) = d/dx A(x,y). A301930

Number of functions f:{1,2,...,n}->{1,2,...,n} such that Im(f) contains 3 fixed elements. A126779

Triangular array T(n,k): functions f:{1,2,...,n}-> {1,2,...,n} such that each of k fixed (but arbitrary) elements are in the image of f. A174551

Triangle read by rows, giving T(n,k) = number of k-member minimal ordered covers of a labeled n-set (1 <= k <= n). A49055

Triangle read by rows: T(n,k) = ∑_j=0..k (-1)^k-j * binomial(k,j) * (4+j)ⁿ. A391633

Number of binary strings of length n with equal numbers of 00010 and 11001 substrings. A164225