Properties of the Number 47987

Forty-Seven Thousand Nine Hundred Eighty-Seven

Basics

Value: 47986 → 47987 → 47988

Parity: odd

Prime: No

Previous Prime: 47981

Next Prime: 48017

Digit Sum: 35

Digital Root: 8

Palindrome: No

Factorization: 47 × 1021

Divisors: 1, 47, 1021, 47987

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1011101101110011

Octal: 135563

Duodecimal: 2392B

Hexadecimal: bb73

Square: 2302752169

Square Root: 219.05935268780468

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

Let a(1)=0. Then a(i+1)=position of first occurrence of a(i) in decimal expansion of log 2. A98289

a(n) = numerator of ∑_{k=2..A335138(n)} abs(A309229(n, k))/k. A335416

Number of partitions satisfying (cn(0,5) <= cn(2,5) and cn(0,5) <= cn(3,5) and cn(0,5) <= cn(1,5) and cn(0,5) <= cn(4,5)). A36801

Integers n such that A047988(n)=4. A47987