Properties of the Number -21523360

Twenty-One Million Five Hundred Twenty-Three Thousand Three Hundred Sixty

Basics

Value: -21523361 → -21523360 → -21523359

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ⁵ × 5 × 17 × 41 × 193

Divisors: 1, 2, 4, 5, 8, 10, 16, 17, 20, 32

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

375 Try Today's Challenge

Representations

Binary: -1010010000110101110100000

Octal: -122065640

Duodecimal: -725B794

Hexadecimal: -1486ba0

Square: 463255025689600

Square Root: 4639.327537477819

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) = 4·a(n-1) - 7·a(n-2) + 6·a(n-3) - 3·a(n-4), starting with 0, 1, 2, 3. A134581

a(n) = (3ⁿ - 1)/2. A3462

a(n) = φ(3ⁿ+1), where φ is Euler's totient function (A000010). A366579

a(n) = floor(3ⁿ / n). A92763

a(n) = φ(9ⁿ+1), where φ is Euler's totient function (A000010). A366667

Numbers that are repdigits in base 3. A48328

Numbers that are repdigits with length > 2 in more than two bases. A290869

The 3 X 3 X ... X 3 dots problem (3, n times): minimal number of straight lines (connected at their endpoints) required to pass through 3ⁿ dots arranged in a 3 X 3 X ... X 3 grid. A261547

Numbers m such that β(m) = τ(m)/2 + 2 where β(m) is the number of Brazilian representations of m and τ(m) is the number of divisors of m. A326382

a(n) = a(n-1) + 3·a(n-2) - 3·a(n-3), with a(0)=a(1)=1, a(2)=4. A52993