Properties of the Number 81472

Eighty-One Thousand Four Hundred Seventy-Two

Basics

Value: 81471 → 81472 → 81473

Parity: even

Prime: No

Previous Prime: 81463

Next Prime: 81509

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ⁶ × 19 × 67

Divisors: 1, 2, 4, 8, 16, 19, 32, 38, 64, 67

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10011111001000000

Octal: 237100

Duodecimal: 3B194

Hexadecimal: 13e40

Square: 6637686784

Square Root: 285.43300439858035

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

7th diagonal of triangle in A059317. A106173

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 865", based on the 5-celled von Neumann neighborhood. A273701

First entry of the vector (Mⁿ)w, where M is the 6x6 matrix [[0, 1, 0, 0, 0, 0, ], [0, 0, 1, 0, 0, 0], [0, 0, 0, 1, 0, 0], [0, 0, 0, 0, 1, 0], [0, 0, 0, 0, 0, 1], [1, 0, -1, 0, 1, 1]] and w is the column vector [0, 1, 1, 2, 3, 5]. A117792

Numbers k such that the number of prime divisors of the k-th Catalan number (counted with multiplicity) divides k. A121612

a(n) = the smallest (n+k) such that the LCM of numbers from (n+1) to (n+k) is a multiple of n. A81472

Number of ballot sequences of length n with exactly 7 fixed points. A239118