Properties of the Number -189828

One Hundred Eighty-Nine Thousand Eight Hundred Twenty-Eight

Basics

Value: -189829 → -189828 → -189827

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 36

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ² × 5273

Divisors: 1, 2, 3, 4, 6, 9, 12, 18, 36, 5273

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -101110010110000100

Octal: -562604

Duodecimal: -91A30

Hexadecimal: -2e584

Square: 36034669584

Square Root: 435.69255215117

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 read by rows: T(n,k) is the number of permutations of {1,2,...,n} having k nonincreasing even cycles (0<=k<=floor(n/4)). A cycle (b(1), b(2), ...) is said to be increasing if, when written with its smallest element in the first position, it satisfies b(1)<b(2)<b(3)<... . A cycle is said to be even if it has an even number of entries. For example, the permutation (1528)(347)(6) has 1 nonincreasing even cycles. A186769

Number of permutations of {1,2,...,n} having no nonincreasing even cycles. A cycle (b(1), b(2), ...) is said to be increasing if, when written with its smallest element in the first position, it satisfies b(1)<b(2)<b(3)<... . A cycle is said to be even if it has an even number of entries. A186770