Properties of the Number 18898

Eighteen Thousand Eight Hundred Ninety-Eight

Basics

Value: 18897 → 18898 → 18899

Parity: even

Prime: No

Previous Prime: 18869

Next Prime: 18899

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 2 × 11 × 859

Divisors: 1, 2, 11, 22, 859, 1718, 9449, 18898

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100100111010010

Octal: 44722

Duodecimal: AB2A

Hexadecimal: 49d2

Square: 357134404

Square Root: 137.4699967265585

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

Representation degeneracies for boson strings. A5292

Number of binary rooted trees with n nodes and height at most 7. A36590

Convolution of Lucas numbers and A023533. A23623

Numbers n for which there are exactly nine k such that n = k + reverse(k). A72433

Indices of terms in the sequence 3, 1, 4, 5, 9, 14, 23, ... (A000285 prefixed with 3) which are prime numbers. A91158

Smallest zeroless number·such that xⁿ has exactly n zero digits. A233821

Positive even numbers which are neither of the form p + 2^m + 1 nor of the form p + 2^m - 1 with p prime. A270446

Numbers k such that usigma(uphi(k)) = uphi(usigma(k)), where usigma is the sum of unitary divisors function (A034448) and uphi is the unitary totient function (A047994). A329730

a(n) is the least number k not ending in 0 such that kⁿ has at least n 0's in its decimal expansion. A368397

Integer part of square root of the reciprocal of a number multiplied by 10 to the power of the integer part of the square root of the number. A89245