Properties of the Number -198990

One Hundred Ninety-Eight Thousand Nine Hundred Ninety

Basics

Value: -198991 → -198990 → -198989

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 36

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ³ × 5 × 11 × 67

Divisors: 1, 2, 3, 5, 6, 9, 10, 11, 15, 18

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110000100101001110

Octal: -604516

Duodecimal: -971A6

Hexadecimal: -3094e

Square: 39597020100

Square Root: 446.08295192710517

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

The ED4 array read by antidiagonals. A167584

Lesser 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). A322541

The third column of the ED4 array A167584. A167589

Lesser of modified exponential amicable pairs. A323758

Lesser of exponentially-odd amicable numbers pair: numbers m < k such that m = s(k) and k = s(m), where s(k) is the sum of proper exponential-odd divisors of k. A325847

(1+e)-σ amicable numbers. A274116

Lesser of recursive amicable numbers pair: numbers m < k such that m = s(k) and k = s(m), where s(k) = A333926(k) - k is the sum of proper recursive divisors of k. A333929