Properties of the Number 2220

Two Thousand Two Hundred Twenty

Basics

Value: 2219 → 2220 → 2221

Parity: even

Prime: No

Previous Prime: 2213

Next Prime: 2221

Digit Sum: 6

Digital Root: 6

Palindrome: No

Factorization: 2 ² × 3 × 5 × 37

Divisors: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100010101100

Octal: 4254

Duodecimal: 1350

Hexadecimal: 8ac

Square: 4928400

Square Root: 47.11687595755899

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

Multiples of 20 containing a 20 in their decimal representation. A121040

Triangular matrix T, read by rows, where row n of T equals row (n-1) of Tⁿ⁺¹ with an appended '1'. A121412

Numbers k such that k² divides 11^k - 1. A127092

Generalized 23-gonal (or icositrigonal) numbers: m*(21·m - 19)/2 with m = 0, +1, -1, +2, -2, +3, -3, ... A303303

a(n) = 3·n*(n + 3)/2. A140091

Triangular matrix T, read by rows, where row n equals row (n-1) of T^n-1 after appending '1' for the main diagonal. A101479

Smallest multiple of n using only digits 0 and 2. A78241

Square array A(n,k), n>=0, k>=0, read by antidiagonals: A(n,k) is the number of partitions of n^k into powers of k. A196879

Multiples of 6 such that the sum of the digits is equal to 6. A62768

a(n) = n*(n + 23). A132765