Properties of the Number 22829

Twenty-Two Thousand Eight Hundred Twenty-Nine

Basics

Value: 22828 → 22829 → 22830

Parity: odd

Prime: No

Previous Prime: 22817

Next Prime: 22853

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 37 × 617

Divisors: 1, 37, 617, 22829

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101100100101101

Octal: 54455

Duodecimal: 11265

Hexadecimal: 592d

Square: 521163241

Square Root: 151.09268678529745

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

Denominator of the harmonic mean of the first n composite numbers. A250133

Odd semiprimes p·q, such that Stern polynomial B(p·q,x) is a product of B(p,x) and B(q,x). A391256

Super-4 Numbers (4·n⁴ contains substring '4444' in its decimal expansion). A32744

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 51", based on the 5-celled von Neumann neighborhood. A270020

Indices of Ulam prime triples, where u(k), u(k+1) and u(k+2) are all primes, and u(k) = A002858(k) are the Ulam numbers. A307330

a(1) = 1 and thereafter a(n) = a(n-1) + j(n-1) where j(1) = 1 and then j(n) = j(n-1)-1 if a(n) is composite or j(n) = 2·j(n-1) if a(n) is prime. A382671

Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1110-0100-0111 pattern in any orientation. A146872

Denominator of the sum of the reciprocals of the first n composite numbers. A296358

a(n) = a([ .5 + n/2 ]) + a([ .5 + n/3 ]) + ... + a([ .5 + n/n ]). A22829