ℕ atory
Play Now

Properties of the Number 43870

Forty-Three Thousand Eight Hundred Seventy

Basics

Value: 43869 → 43870 → 43871

Parity: even

Prime: No

Previous Prime: 43867

Next Prime: 43889

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 5 × 41 × 107

Divisors: 1, 2, 5, 10, 41, 82, 107, 205, 214, 410

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010101101011110

Octal: 125536

Duodecimal: 2147A

Hexadecimal: ab5e

Square: 1924576900

Square Root: 209.45166506857854

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

T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with each 2X2 subblock having clockwise pattern 0001 0101 or 0111. A259297
Row sums of triangle in A090285. A90317
Generalized Poly-Bernoulli numbers. A81675
Triangle read by rows: T(n,k) is the number of set partitions of {1,2,...,n} (or of any n-set) having k blocks of odd size (0<=k<=n). A124321
Number of integers in n-th generation of tree T(-1/3) defined in Comments. A274148
Number of (5+2)X(n+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 1 3 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 1 3 6 or 7. A252310
Number of (n+1)X(4+1) 0..1 arrays with each 2X2 subblock having clockwise pattern 0001 0101 or 0111. A259293
Number of (n+1)X(n+1) 0..1 arrays with each 2X2 subblock having clockwise pattern 0001 0101 or 0111. A259289
T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 1 3 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 1 3 6 or 7. A252305
Number of (n+1) X (6+1) arrays of permutations of 0..n·7+6 with each element having index change +-(.,.) 0,0 1,2 or 2,2. A264015