Properties of the Number 30629

Thirty Thousand Six Hundred Twenty-Nine

Basics

Value: 30628 → 30629 → 30630

Parity: odd

Prime: No

Previous Prime: 30593

Next Prime: 30631

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 109 × 281

Divisors: 1, 109, 281, 30629

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111011110100101

Octal: 73645

Duodecimal: 15885

Hexadecimal: 77a5

Square: 938135641

Square Root: 175.0114281982751

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

Beach-Williams Pell numbers of type k² + 4. A212083

Irregular triangular array: row n gives numbers D, each being the discriminant of the minimal polynomial of a quadratic irrational represented by a continued fraction with period an n-tuple of 1s and 3s. A246921

Irregular triangular array: every periodic simple continued fraction CF represents a quadratic irrational (c + f·sqrt(d))/b, where b,c,f,d are integers and d is squarefree. Row n of this array shows the distinct values of d as CF ranges through the periodic continued fractions having period an n-tuple of 1s and 3s. A246922

Numerators of the partial alternating sums of the reciprocals of the sum of bi-unitary divisors function (A188999). A379617

Position where n (presumably) appears the last time in A107261, or 0 if n keeps appearing. A107262

Composite numbers whose sum of aliquot parts divides the sum of their unrelated numbers. A250399

Number of 4 X n binary arrays with rows and columns lexicographically nondecreasing and column sums nonincreasing. A266471

Numbers k such that k![4] - 2 is prime, where k![4] = A007662(k) = quadruple factorial. A283554

a(n) = (4·n³ + 30·n² + 50·n)/3 + 1. A323218

Semiprimes of the form k² + 4. A360741