Properties of the Number 18673

Eighteen Thousand Six Hundred Seventy-Three

Basics

Value: 18672 → 18673 → 18674

Parity: odd

Prime: No

Previous Prime: 18671

Next Prime: 18679

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 71 × 263

Divisors: 1, 71, 263, 18673

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100100011110001

Octal: 44361

Duodecimal: A981

Hexadecimal: 48f1

Square: 348680929

Square Root: 136.6491858739012

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

Composite numbers generated by the Euler polynomial x² + x + 41. A145292

Number of ordered triples (i,j,k) with |i|, |j|, |k|, |i·j*k| <= n. A226359

Semiprimes generated by the Euler polynomial x² + x + 41. A228183

Numbers k such that 255·2^k-1 is prime. A50886

Numbers n such that σ(n)=reversal(n)-n. A72394

a(1) = 1; a(2) = 9; for n>2, a(n) = smallest number of the form 4k+1 and a(n) > a(n-1) such that the pairwise sums of elements are all semiprimes. A175532

Number of different hook length multisets of partitions of n. A180652

A290865(n) -(n-1). A290876

a(n) is the row of the Trithoff (tribonacci) array that contains the tails of the sequence which is n times the tribonacci numbers. A351685

The a(n)-th highly-composite number (A002182) is the first one divisible by 2ⁿ. A72847