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Properties of the Number 4080

Four Thousand Eighty

Basics

Value: 4079 → 4080 → 4081

Parity: even

Prime: No

Previous Prime: 4079

Next Prime: 4091

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 4 × 3 × 5 × 17

Divisors: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 111111110000

Octal: 7760

Duodecimal: 2440

Hexadecimal: ff0

Square: 16646400

Square Root: 63.874877690685246

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 degree-n irreducible polynomials over GF(2); number of n-bead necklaces with beads of 2 colors when turning over is not allowed and with primitive period n; number of binary Lyndon words of length n. A1037
a(n) = (1/n) * ∑ d divides n μ(n/d) * (2d - 1). A59966
a(n) = n*(n-1)*(n-2) (or n!/(n-3)!). A7531
Numbers n such that n = product (pk)ck and set of its (ck k's)'s is a self-conjugate partition, where pk is k-th prime and ck > 0. A88902
Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-2), where a(0) = 1, a(1) = 3, b(0) = 2, b(1) = 4. A293076
Ordered areas of primitive Pythagorean triangles. A24406
Orders of noncyclic simple groups (without repetition). A1034
Triangular array read by rows associated with Schroeder numbers: T(1,k) = 1; T(n,k) = 0 if k < n; T(n,k) = T(n,k-1) + T(n-1,k-1) + T(n-1,k). A33877
The number k(GL(n,q)) of conjugacy classes in GL(n,q), q=4. A49314
Numbers that can be expressed as the difference of the squares of primes in exactly four distinct ways. A92000