Properties of the Number 22779

Twenty-Two Thousand Seven Hundred Seventy-Nine

Basics

Value: 22778 → 22779 → 22780

Parity: odd

Prime: No

Previous Prime: 22777

Next Prime: 22783

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 2531

Divisors: 1, 3, 9, 2531, 7593, 22779

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 101100011111011

Octal: 54373

Duodecimal: 11223

Hexadecimal: 58fb

Square: 518882841

Square Root: 150.9271347372632

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

Descending dungeons: like A121295 but read subscripts from top downwards. A121296

Numbers n such that n is a substring of its square in base 6 (written in base 10). A18830

Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where A(n,k) = n! * k! * [xⁿ * y^k] 1 / (exp(x) + exp(y) - exp(x+y))³. A382735

Irregular table read by rows, T(n, k) is the rank of the k-th Seidel permutation of {1,...,n}, permutations sorted in lexicographical order. A347600

a(n) = ∑_k=0..n (k!)² * binomial(k+2,2) * Stirling2(n,k)². A382738

Smallest precursor of n-th cycle in the "Recurring Digital Invariant Variant" problem. A151543

Triangle of coefficients of polynomials u(n,x) jointly generated with A210748; see the Formula section. A210747

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 133", based on the 5-celled von Neumann neighborhood. A270234

Indices of records in A361321. A361326

Powers of fifth root of 23 rounded to nearest integer. A18181