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Properties of the Number 1798

One Thousand Seven Hundred Ninety-Eight

Basics

Value: 1797 → 1798 → 1799

Parity: even

Prime: No

Previous Prime: 1789

Next Prime: 1801

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

Today's Target

2196 Try Today's Challenge

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) = 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 102·k+1 - 10k - 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
Number of strict integer partitions of n with a part dividing all the other parts. A97986
Bernoulli number Bn has denominator 354. A255684
Squarefree numbers with a divisor having the same sum of prime indices as their quotient. A357854
a(n) = ceiling((1 + sum of preceding terms) / 2) starting with a(0) = 1. A5428