Properties of the Number 28944

Twenty-Eight Thousand Nine Hundred Forty-Four

Basics

Value: 28943 → 28944 → 28945

Parity: even

Prime: No

Previous Prime: 28933

Next Prime: 28949

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 ⁴ × 3 ³ × 67

Divisors: 1, 2, 3, 4, 6, 8, 9, 12, 16, 18

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111000100010000

Octal: 70420

Duodecimal: 14900

Hexadecimal: 7110

Square: 837755136

Square Root: 170.1293625450939

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

n! * (fractional part of n-th harmonic number). A95998

Determinants of 5 X 5 matrices consisting of 25 consecutive primes. A118815

Triangle read by rows: T(n,k) = coefficient of x^k in the polynomial p[n,x] defined by p[0,x]=1, p[1,x]=1+x and p[n,x]=(1+x)(2-x)(3-x)...(n-x) for n >= 2 (0 <= k <= n). A123361

Triangular array: (1/2)*A193851. A193853

Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of (f(i,j)), where f(i,1)=f(1,j)=1, f(i,i)= i; f(i,j)=0 otherwise; as in A204179. A204180

Triangle read by rows, related to A055129 (repunits in base k). A107893

INVERTi transform of A141314. A141315

Number of binary strings of length n with no substrings equal to 0010 1001 or 1010. A164500

Floor(1/{(7+n⁴)^1/4}), where {}=fractional part. A184631

a(n) = (122n³ + 140n² + 45n + 3n(-1)ⁿ)/8. A191698