Properties of the Number 20229

Twenty Thousand Two Hundred Twenty-Nine

Basics

Value: 20228 → 20229 → 20230

Parity: odd

Prime: No

Previous Prime: 20219

Next Prime: 20231

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 11 × 613

Divisors: 1, 3, 11, 33, 613, 1839, 6743, 20229

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100111100000101

Octal: 47405

Duodecimal: B859

Hexadecimal: 4f05

Square: 409212441

Square Root: 142.22868908908637

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 in which the sequence of the sum of the same summands is nondecreasing. A304405

Numbers of the form HMMSS with primes H < 24 and MM, SS < 60, for which the number of seconds after midnight, 3600·H+60·MM+SS, is also prime. A295011

Prime time numbers on 6-digit clocks: numbers of the form HMMSS where H, MM, SS are primes, H < 24, MM and SS < 60. A295014

Sum of the third largest parts of the partitions of n into 5 parts. A308825

Numbers k such that w(k-2), w(k-1), and w(k) are all odd, where w is A336957. A338070

Irregular table: n-th row polynomial given by the formal power series expansion of ∑_{k >= 0} (1 + q)^{n·k + k*(k+1}/2)* ∏_{j = 1..k} (1 - (1 + q)^j), n >= 1. A340880

a(n) = 70·n² - 1. A158736

Row sums of triangle A175009. A175006

a(n) is the row of the Trithoff (tribonacci) array that contains the tails of the sequence which is n times the tribonacci numbers. A351685

Number of n X 3 0..4 arrays with each element·equal to the number its horizontal and vertical neighbors equal to 3,3,2,1,2 for x=0,1,2,3,4. A197337