Properties of the Number 24861

Twenty-Four Thousand Eight Hundred Sixty-One

Basics

Value: 24860 → 24861 → 24862

Parity: odd

Prime: No

Previous Prime: 24859

Next Prime: 24877

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 8287

Divisors: 1, 3, 8287, 24861

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 110000100011101

Octal: 60435

Duodecimal: 12479

Hexadecimal: 611d

Square: 618069321

Square Root: 157.67371372552878

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 n such that 9·10ⁿ + 8·R_n - 7 is prime, where R_n = 11...1 is the repunit (A002275) of length n. A103107

Number of n X 2 0,1 arrays indicating 2 X 2 subblocks of some larger (n+1) X 3 binary array having determinant equal to one, with rows and columns of the latter in nondecreasing lexicographic order. A227637

The Wiener index of the graph obtained by applying Mycielski's construction to a benzenoid consisting of a linear chain of n hexagons. A228597

If n is composite, replace n with the concatenation of its nontrivial divisors, written in increasing order, each divisor being written in base 10 with its digits in reverse order, otherwise a(n) = n. A361320

a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (natural numbers), t = (F(2), F(3), F(4), ... ). A24861