Properties of the Number -1798

Seven Hundred Ninety-Eight

Basics

Value: -1799 → -1798 → -1797

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 × 29 × 31

Divisors: 1, 2, 29, 31, 58, 62, 899, 1798

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11100000110

Octal: -3406

Duodecimal: -105A

Hexadecimal: -706

Square: 3232804

Square Root: 42.40283009422838

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

a(n) = (-n³ + 9n² - 5n + 3)/3. A161702

Expansion of 1/(1+x²-2·x³). A77912

Expansion of ∏_k>=1 1 / (1 + 3^k-1*x^k). A352762

sech(sinh(x)+tan(x))=1-4/2!*x²+56/4!*x⁴-1798/6!*x⁶+107880/8!*x⁸... A13055

a(n) = ceiling((∑_k=1..n-1 a(k)) / 2) for n >= 2 starting with a(1) = 1. A73941

Number of partitions of n such that some part is a sum of two other parts. A237113

Numbers k such that 10^2·k+1 - 10^k - 1 is prime. A183187

a(n) = 2·n² - 2. A54000

a(0) = 0. For n > 0, smallest non-palindromic number k such that the smallest palindrome in the Reverse and Add! trajectory of k is reached after exactly n iterations. A23109

Number of integer partitions of n such that every set of distinct parts has a different sum. A325862