Properties of the Number 18700

Eighteen Thousand Seven Hundred

Basics

Value: 18699 → 18700 → 18701

Parity: even

Prime: No

Previous Prime: 18691

Next Prime: 18701

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 5 ² × 11 × 17

Divisors: 1, 2, 4, 5, 10, 11, 17, 20, 22, 25

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100100100001100

Octal: 44414

Duodecimal: A9A4

Hexadecimal: 490c

Square: 349690000

Square Root: 136.74794331177344

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

Numbers that are the sum of 4 positive 7th powers. A3371

Sum of 7th powers: 1⁷ + 2⁷ + ... + n⁷. A541

10-gonal (or decagonal) pyramidal numbers: a(n) = n*(n + 1)*(8·n - 5)/6. A7585

Position in A356226 of first appearance of the n-th composition in standard order (row n of A066099). A356603

Triangle T(n,k) = sum of the k first n-th powers. A215083

a(n) = number of regions in the configuration A290447(n). A290865

Sum of the seventh powers of the parts in the partitions of n into two parts. A294274

a(n) = 1ⁿ + 2ⁿ + 3ⁿ + 4ⁿ. A1551

Numbers k such that k+1, k²+1 and k⁴+1 are primes. A70325

Triangle T(n,k) giving the number of simple matroids of rank k on n labeled points (n >= 2, 2 <= k <= n). A58720