Properties of the Number -30015

Thirty Thousand Fifteen

Basics

Value: -30016 → -30015 → -30014

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 × 23 × 29

Divisors: 1, 3, 5, 9, 15, 23, 29, 45, 69, 87

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -111010100111111

Octal: -72477

Duodecimal: -15453

Hexadecimal: -753f

Square: 900900225

Square Root: 173.24837661577092

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

Generalized Stirling number triangle of first kind read by rows: T(n, k) = [x^k] ∏_m=1..n (x - m - r), with r = 8. A51380

Numbers n divisible by exactly two nontrivial permutations (rearrangements) of the digits of n. A90057

Numbers of the form 86+p² (where p is a prime). A138692

T(n,k)=Equals one maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, vertical and antidiagonal neighbors in a random 0..2 nXk array. A220810

Numbers k such that k and k+1 are both φ-practical numbers (A260653). A330871

Number of subsets of {1..n} whose cardinality is equal to the average of the elements. A339484

Numbers m such that both m²-1 and m² are refactorable numbers (A033950) and that m² has more divisors than m²-1. A342970

a(n) is the least k > 0 such that k and 3k are anagrams in base n (written in base 10). A23095

Numbers k such that k-th and (k+1)-st term of A038593 differ by 4. A38635

10-gonal numbers which are divisible by the sum of their digits. A119548