Properties of the Number 47278

Forty-Seven Thousand Two Hundred Seventy-Eight

Basics

Value: 47277 → 47278 → 47279

Parity: even

Prime: No

Previous Prime: 47269

Next Prime: 47279

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 × 7 × 11 × 307

Divisors: 1, 2, 7, 11, 14, 22, 77, 154, 307, 614

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1011100010101110

Octal: 134256

Duodecimal: 2343A

Hexadecimal: b8ae

Square: 2235209284

Square Root: 217.4350477728924

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) = 1·2*3 + 4·5*6 + 7·8*9 + 10·11·12 + 13·14·15 + 16·17·18 + ... + (up to n). A319014

Triangular numbers with property that digits alternate in parity. A68882

Number of ordered set partitions of [n] with at most five elements per block. A276925

Hexagonal numbers (A000384) that are the sum of twelve consecutive hexagonal numbers. A257723

Hexagonal numbers (A000384) in which parity of digits alternates. A297645

a(n) = (m(n)² + 3)*(m(n)² + 7)/32, where m(n) = 2·n - 1. A336535

Number of strict compositions of n with alternating parts strictly decreasing. A342343

Even triangular numbers with prime indices. A34955

Triangular numbers p*(p+1)/2 with p prime such that 1+(number of prime factors of p+1) is prime. A144549

Triangular numbers with sum of digits = 28. A68132