Properties of the Number 29821

Twenty-Nine Thousand Eight Hundred Twenty-One

Basics

Value: 29820 → 29821 → 29822

Parity: odd

Prime: No

Previous Prime: 29819

Next Prime: 29833

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 11 × 2711

Divisors: 1, 11, 2711, 29821

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111010001111101

Octal: 72175

Duodecimal: 15311

Hexadecimal: 747d

Square: 889292041

Square Root: 172.6875791711726

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

a(n) = ∑_k=1..n gcd(k, n)³. A343497

Integers k such that A166100(k)/A005408(k) is not an integer. A166101

Values of the family of polynomials y = xⁿ + x + 1 at point x = discriminant of y. A174307

a(n) = (2·n³ + 3·n² + n + 3)/3. A188475

Number of steps to reach 1 in '3x+1' (or Collatz) problem starting with the n-th Mersenne prime. A181777

Centered 12-gonal numbers which are semiprimes, intersection of A003154 and A001358. A218172

Distance from 10ⁿ to the next prime triplet. A357052

a(n) is the number of distinct scalar products which can be formed by pairs of signed permutations (V, W) of [n]. A358655

Number of 5-regular polyhedra with 2n nodes. A308489

a(n) is the number of partitions of 72·n + 42 into 10 odd squares. A323891