Properties of the Number 24381

Twenty-Four Thousand Three Hundred Eighty-One

Basics

Value: 24380 → 24381 → 24382

Parity: odd

Prime: No

Previous Prime: 24379

Next Prime: 24391

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ⁴ × 7 × 43

Divisors: 1, 3, 7, 9, 21, 27, 43, 63, 81, 129

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101111100111101

Octal: 57475

Duodecimal: 12139

Hexadecimal: 5f3d

Square: 594433161

Square Root: 156.14416415607724

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

Stirling2 triangle with scaled diagonals (powers of 3). A75498

Number of primitive (period n) periodic palindromes using a maximum of two different symbols. A56493

Term at which first number of height n occurs in Recamán's sequence A005132. A64292

Number of permutations (p(1), p(2), ..., p(n)) satisfying -k <= p(i)-i <= r and p(i)-i not in the set I, i=1..n, with k=2, r=4, I={-1,1,2,3}. A224809

Expansion of 1/((1-3x)(1-6x)(1-9x)). A17933

The number of different classes of 2-dimensional convex lattice polytopes having volume n/2 up to unimodular equivalence. A187015

Riordan array (1/((1-x)(1-3x)),x/((1-x)(1-3x))). A116414

Number of primitive (period n) periodic palindromes using exactly two different symbols. A56498

Values of n at which the ratio A005132(n)/n sets a new record. A64622

The following triangle is based on Pascal's triangle. The r-th term of the n-th row is sum of C(n,r) successive integers so that the sum of all the terms of the row is (2ⁿ)*(2ⁿ+1)/2, the 2ⁿ -th triangular number. Sequence contains the triangle read by rows. A112358