Properties of the Number -10215

Ten Thousand Two Hundred Fifteen

Basics

Value: -10216 → -10215 → -10214

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 × 227

Divisors: 1, 3, 5, 9, 15, 45, 227, 681, 1135, 2043

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -10011111100111

Octal: -23747

Duodecimal: -5AB3

Hexadecimal: -27e7

Square: 104346225

Square Root: 101.0692831675381

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) = n³ + (n+1)³ + (n+2)³. A27602

a(n) = n*(2 + 5·n). A168668

Moments of the ternary Cantor measure (numerators). A308612

Smallest k such that the fundamental unit (x+y·w) or (x+y·w)/2 of the real quadratic field Q(sqrt(k)) obeys gcd(k,y)=n. A197170

Number of (w,x,y,z) with all terms in {1,...,n} and w+y=|x-y|+|y-z|. A212677

a(n) is the n-th b > 1 such that p = prime(n) satisfies b^p-1 == 1 (mod p²). A280721

Starting term of the smallest n-chain of numbers whose squares are permutations of the same digits. A85546

Numerator of Euler(n, 4/23). A156941

a(n) = (prime(n) - 1)*(prime(n+1) - 1)/2 + 3. A201498

Numbers with exactly 12 nonprime substrings (substrings with leading zeros are considered to be nonprime). A213319