Properties of the Number 18529

Eighteen Thousand Five Hundred Twenty-Nine

Basics

Value: 18528 → 18529 → 18530

Parity: odd

Prime: No

Previous Prime: 18523

Next Prime: 18539

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 7 × 2647

Divisors: 1, 7, 2647, 18529

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100100001100001

Octal: 44141

Duodecimal: A881

Hexadecimal: 4861

Square: 343323841

Square Root: 136.12126946219684

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 arrays of -1..1 integers x(1..n) with every x(i) in a subsequence of length 1 or 2 with sum zero. A193641

Odd integers that do not generate monotonically decreasing infinitary aliquot sequences. A127667

a(n) = sqrt(A370259(2·n+1)). A370260

a(n) = (p² - p + 2)/2 for p = prime(n); number of squares modulo p². A72205

Sum of terms in n-th row of A077164. A77167

Maximum number of partitions of n into exactly k parts, each <= k. a(n) is maximum in each row of A157044. A157046

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 100 ones. A31868

Number of labeled rooted trees with n nodes with every leaf at the same height. A238372

Numbers k such that A084937(3k) > A084937(3k+1). A249689

Those terms of A255571 whose every A080541/A080542-rotation is also a term of A255571. A258001