Properties of the Number 22605

Twenty-Two Thousand Six Hundred Five

Basics

Value: 22604 → 22605 → 22606

Parity: odd

Prime: No

Previous Prime: 22573

Next Prime: 22613

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 11 × 137

Divisors: 1, 3, 5, 11, 15, 33, 55, 137, 165, 411

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101100001001101

Octal: 54115

Duodecimal: 110B9

Hexadecimal: 584d

Square: 510986025

Square Root: 150.34959261667456

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

Constant term in the reduction by (x² -> x + 1) of the polynomial C(n)*xⁿ, where C=A000285. A192914

Composites that are the sum of two, three, four and five consecutive composite numbers. A151745

Numbers k such that φ(k) + σ(k) = reversal(k) + 2. A237521

Numbers divisible by prime(d) for each digit d in their base-6 representation, none of which may be zero. A256876

Numbers n such that the Diophantine equation x⁴+y⁵=n⁴ has solutions. A70756

Number of (n+2) X 3 binary arrays with each 3 X 3 subblock having rows and columns in lexicographically nondecreasing order. A184540

Number of n X 4 0..1 arrays with rows and columns lexicographically nondecreasing read forwards, and nonincreasing read backwards. A201371

The number of symmetric positive definite 2 X 2 matrices whose entries are integers of absolute value at most n. A219693

Numbers n such that 49·2ⁿ-1 is prime. A50550

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 1, 1), (0, 0, -1), (1, 0, 1)}. A148672