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Properties of the Number -285285

Two Hundred Eighty-Five Thousand Two Hundred Eighty-Five

Basics

Value: -285286 → -285285 → -285284

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 7 × 11 × 13 × 19

Divisors: 1, 3, 5, 7, 11, 13, 15, 19, 21, 33

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1000101101001100101

Octal: -1055145

Duodecimal: -119119

Hexadecimal: -45a65

Square: 81387531225

Square Root: 534.1207728594723

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

Product of all primes p not dividing n such that the sum of the base-p digits of n is at least p, or 1 if no such prime exists. A324370
Denominator of the second derivative of the n-th Bernoulli polynomial B(n,x). A366168
Numbers n such that the cyclotomic polynomial of order n has a nonzero coefficient which does not appear in any cyclotomic polynomials of lower order. A46887
a(n) = ∑d∣n μ(n/d) * binomial(8·d,d) / (7·d+1). A346939
Lucky numbers that are concatenations of a number k with itself. A32650
Products of 6 distinct odd primes. A168352
a(n) is the conductor of extension of Q generated by character values of the n-th alternating group An; the smallest m such that the extension is a subfield of the m-th cyclotomic field Q(zetam). A376940
a(n) = binomial(5·n+8, 4)/5 for n >= 0. A238473
Means referred to in A093498. A93499
a(1) = 1, a(n+1) = prime(n)*Digit reversal of a(n). A95198