Properties of the Number 72257

Seventy-Two Thousand Two Hundred Fifty-Seven

Basics

Value: 72256 → 72257 → 72258

Parity: odd

Prime: No

Previous Prime: 72253

Next Prime: 72269

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 19 × 3803

Divisors: 1, 19, 3803, 72257

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 10001101001000001

Octal: 215101

Duodecimal: 35995

Hexadecimal: 11a41

Square: 5221074049

Square Root: 268.80662194224305

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

Number of primes less than 10ⁿ with initial digit 6. A73512

T(n,k)=Number of nXk arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random 0..2 nXk array. A217964

Numerators of continued fraction convergents to sqrt(115). A41208

Numerators of continued fraction convergents to sqrt(460). A41876

Number of n X 3 arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random 0..2 n X 3 array. A217959

Number of 5Xn arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random 0..2 5Xn array. A217968

a(n) = ((6·n-17)*4ⁿ - 1)/3. A72257

Number of primes <= prime(n) which begin with a 6. A65685