Properties of the Number 3580

Three Thousand Five Hundred Eighty

Basics

Value: 3579 → 3580 → 3581

Parity: even

Prime: No

Previous Prime: 3571

Next Prime: 3581

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 5 × 179

Divisors: 1, 2, 4, 5, 10, 20, 179, 358, 716, 895

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 110111111100

Octal: 6774

Duodecimal: 20A4

Hexadecimal: dfc

Square: 12816400

Square Root: 59.833101206606365

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

Number of partitions of n into relatively prime parts. Also aperiodic partitions. A837

Numbers n such that the decimal expansions of both n and n² have 0 as smallest digit and 8 as largest digit. A256708

Triangle read by rows: T(n,k) is the number of c-nets with n+1 faces and k+1 vertices. A290326

T(n,k) is the number of n X k 0..4 arrays with each element equal to the number of its horizontal and vertical zero neighbors. A197054

T(n,k) is the number of length n+1 0..2·k arrays with the sum of the absolute values of adjacent differences equal to n·k. A249982

Fundamental discriminants of real quadratic number fields with class number 6. A218156

Expansion of φ(x) / f(-x) in powers of·where φ(), f() are Ramanujan θ functions. A29552

Sophie Germain 4-almost primes. A111176

At stage 1, start with a unit equilateral equiangular triangle. At each successive stage add 3*(n-1) new triangles around outside with edge-to-edge contacts. Sequence gives number of triangles (regardless of size) at n-th stage. A64412

Numbers k such that k¹⁰ + 9 is prime. A125264