Properties of the Number 22454

Twenty-Two Thousand Four Hundred Fifty-Four

Basics

Value: 22453 → 22454 → 22455

Parity: even

Prime: No

Previous Prime: 22453

Next Prime: 22469

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 × 103 × 109

Divisors: 1, 2, 103, 109, 206, 218, 11227, 22454

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101011110110110

Octal: 53666

Duodecimal: 10BB2

Hexadecimal: 57b6

Square: 504182116

Square Root: 149.84658821608184

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 2-trees rooted at an asymmetric end-edge. A63682

Consider trajectory of n under repeated applications of the function f(x) = 'Sum of the prime factors of x (with multiplicity)' (see A029908). Sequence gives composite numbers n that end at a prime m that divides n and m is greater than any m's seen already. A84931

a(n) = numerator of constant λ(n) involved in a recurrence for the Atkin polynomials A_k(j). A145226

Squarefree numbers k such that the sum of the distinct prime factors of k is twice the difference between the largest and the smallest prime factors of k. A324210

a(n) = ∑_k=1..n σ(k)*2^n-k where σ(k) = A000203(k) is the sum of divisors of k. A66767

Expansion of 1/((1-x)*(1-5·x)*(1-7·x)*(1-10·x)). A22454

Start with a(1)=1; thereafter a(n+1) = ∑_{k=1..n such that d(a(k)) = d(a(n))} d(a(k)) where d = A000005. A343327