Properties of the Number 47280

Forty-Seven Thousand Two Hundred Eighty

Basics

Value: 47279 → 47280 → 47281

Parity: even

Prime: No

Previous Prime: 47279

Next Prime: 47287

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 ⁴ × 3 × 5 × 197

Divisors: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1011100010110000

Octal: 134260

Duodecimal: 23440

Hexadecimal: b8b0

Square: 2235398400

Square Root: 217.43964679883013

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

a(n) = 3·2*1 + 6·5*4 + 9·8*7 + 12·11·10 + ... + (up to the n-th term). A319867

Number of distinct regions among all circles that can be constructed on vertices of an n-sided regular polygon, using only a compass. A359046

Moebius transform of numbers of preferential arrangements. A6936

Number of permutations of [n] with no fixed points where the maximal displacement of an element equals three. A321049

Numbers k such that 7·10^k - 9 is prime. A103048

Array read by downward antidiagonals: A(n,k) = A(n-1,k+1) + 2*(k+1)!*∑_j=0..k A(n-1,j)/j! with A(0,k) = 2*(k+1)!, n >= 0, k >= 0. A379459

Positive integer averages of first n Pell numbers; Sum{k=0..n-1} A000129(k) / n where n is in A270342. A270359

Numbers that are congruent to {3, 6} mod 7. A47280