Properties of the Number 28212

Twenty-Eight Thousand Two Hundred Twelve

Basics

Value: 28211 → 28212 → 28213

Parity: even

Prime: No

Previous Prime: 28211

Next Prime: 28219

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 ² × 3 × 2351

Divisors: 1, 2, 3, 4, 6, 12, 2351, 4702, 7053, 9404

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110111000110100

Octal: 67064

Duodecimal: 143B0

Hexadecimal: 6e34

Square: 795916944

Square Root: 167.96428191731718

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 such that (number parts having multiplicity 1) is a part or (number of 1s) is a part. A241510

Numbers missing from A001033 despite satisfying the necessary congruence conditions (see comments). A274470

Discriminants of totally real cubic fields with 3 associated nonconjugate fields. A329787

a(n) is the minimum positive integer k such that the concatenation of k, a(n-1), a(n-2), ..., a(2), and a(1) is the lesser of a pair of twin primes (i.e., a term of A001359), with a(1) = 11. A350246

a(n) = 196·n² - n. A158003

a(n) = 784·n² - 2·n. A158398

a(n) = 144·n² - 12. A158543

Number of length-4 0..n arrays with no repeated value differing from the previous repeated value by one or less. A269607

Number of nX5 0..1 arrays with every element equal to 0, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero. A298586

T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero. A298589