Properties of the Number 84015

Eighty-Four Thousand Fifteen

Basics

Value: 84014 → 84015 → 84016

Parity: odd

Prime: No

Previous Prime: 84011

Next Prime: 84017

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 × 1867

Divisors: 1, 3, 5, 9, 15, 45, 1867, 5601, 9335, 16803

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10100100000101111

Octal: 244057

Duodecimal: 40753

Hexadecimal: 1482f

Square: 7058520225

Square Root: 289.85341122712356

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) = ∑_{k=0..floor(n/4)} (-1)^k * binomial(n-3·k,k) * Catalan(k). A360026

Largest n-digit palindromic multiple of n. For n = 10k it is sufficient that the multiple is palindromic with leading zeros ignored. 0 if no such number exists. A84015

Numbers·such that the sum of all their cyclic permutations is equal to that of all cyclic permutations of σ(x) and all cyclic permutations of Euler totient function φ(x). A247317