Properties of the Number -18538

Eighteen Thousand Five Hundred Thirty-Eight

Basics

Value: -18539 → -18538 → -18537

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 × 13 × 23 × 31

Divisors: 1, 2, 13, 23, 26, 31, 46, 62, 299, 403

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: -100100001101010

Octal: -44152

Duodecimal: -A88A

Hexadecimal: -486a

Square: 343657444

Square Root: 136.15432420602733

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 integer partitions of n of even rank. A340601

Sum of all parts > 1 of all partitions of n. A194552

Squarefree numbers k such that k² is abundant, and d² is nonabundant for any proper divisor d of k. A381741

13 times pentagonal numbers: a(n) = 13·n*(3·n-1)/2. A153793

Multiples of 23 whose digit reversal + 1 is also a multiple of 23. A166393

Number of 6 X n arrays of the minimum value of corresponding elements and their horizontal or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..1 6 X n array. A220036

Number of (n+2) X 3 0..1 matrices with each 3 X 3 subblock idempotent. A224552