Properties of the Number 33621

Thirty-Three Thousand Six Hundred Twenty-One

Basics

Value: 33620 → 33621 → 33622

Parity: odd

Prime: No

Previous Prime: 33619

Next Prime: 33623

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 7 × 1601

Divisors: 1, 3, 7, 21, 1601, 4803, 11207, 33621

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1000001101010101

Octal: 101525

Duodecimal: 17559

Hexadecimal: 8355

Square: 1130371641

Square Root: 183.36030104687327

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

4-Stirling numbers of the second kind. A143496

Triangle of a(n,k) = number of k-member minimal covers of an n-set (n >= k >= 1). A35348

Number of minimal 3-covers of a labeled n-set. A3468

a(n) = ∑_k=1..n lcm(k,n)/gcd(k,n). A56789

Triangle read by rows. The Bell transform of the sequence {m^m | m >= 0}. A354794

Triangle of Lehmer-Comtet numbers of 2nd kind. A39621

a(n) = n*(n² - 4·n + 5)/2. A162607

a(n) = 20·n² + 1. A158493

a(0) = a(1) = a(2) = 1; a(n) = a(n-3) + ∑_k=0..n-4 a(k) * a(n-k-4). A343304

Sum of terms in row n of A081520. A81519