Properties of the Number -86415

Eighty-Six Thousand Four Hundred Fifteen

Basics

Value: -86416 → -86415 → -86414

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 7 × 823

Divisors: 1, 3, 5, 7, 15, 21, 35, 105, 823, 2469

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10101000110001111

Octal: -250617

Duodecimal: -42013

Hexadecimal: -1518f

Square: 7467552225

Square Root: 293.9642835447871

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=1..n (-1)^k-1 * binomial(floor(n/k)+3,4). A366659

Sum of terms in row n of A081539. A81540

Partial sums of repdigits of A002281. A99674

a(n) = 441·n² - 21. A145678

a(n) = 196·n² - n. A158003

Numbers obtained by adding the first k repdigits that consist of the same digit, for some number k. A346535

Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 01000-11100-00111-00010 pattern in any orientation. A147333