Properties of the Number 1098

One Thousand Ninety-Eight

Basics

Value: 1097 → 1098 → 1099

Parity: even

Prime: No

Previous Prime: 1097

Next Prime: 1103

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 61

Divisors: 1, 2, 3, 6, 9, 18, 61, 122, 183, 366

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10001001010

Octal: 2112

Duodecimal: 776

Hexadecimal: 44a

Square: 1205604

Square Root: 33.13608305156178

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) = ∑_k=1..n k·floor(n/k); also ∑_k=1..n σ(k) where σ(n) = sum of divisors of n (A000203). A24916

a(n) = n·prime(n). A33286

Multiples of 9 containing a 9 in their decimal representation. A121029

Solution of the complementary equation a(n) = a(n-1) + a(n-2) + n·b(n-2), where a(0) = 1, a(1) = 2, b(0) = 3, and (a(n)) and (b(n)) are increasing complementary sequences. A296284

Numbers whose negated unsorted prime signature is not unimodal. A332642

Number of planted trees where non-root, non-leaf nodes an even distance from root are of degree 2. A7562

Numbers k such that k and k² have same digit sum. A58369

Number A(n,k) of partitions of the (n+k)-multiset {0,...,0,1,2,...,k} with n 0's; square array A(n,k), n>=0, k>=0, read by antidiagonals. A346426

Numbers m such that there are precisely 16 groups of order m. A295161

Numbers that are the sum of 3 nonzero squares in exactly 7 ways. A25327