Properties of the Number -15021

Fifteen Thousand Twenty-One

Basics

Value: -15022 → -15021 → -15020

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 1669

Divisors: 1, 3, 9, 1669, 5007, 15021

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11101010101101

Octal: -35255

Duodecimal: -8839

Hexadecimal: -3aad

Square: 225630441

Square Root: 122.56018929489298

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

Numbers k such that k² is palindromic in base 8. A29805

Numbers such that the digital sum base 2 and the digital sum base 3 and the digital sum base 10 all are equal. A135120

Numbers that are equal to the sum of the number of divisors of their k first powers, for some k. A270389

Max_k=0..n { Number of partitions of n into exactly k parts }. A2569

T(n,k)=Number of lower triangular n X n arrays colored with integers 0 upwards introduced in row major order, with no element equal to any diagonal or antidiagonal neighbor, and containing the value n(n+1)/2-k-1. A211963

Number of partitions p of n such that the number of numbers having multiplicity 1 in p is a part or the number of numbers having multiplicity > 1 is a part. A239737

Square array T(n, k) = ∏_j=1..n ( ∑_i=0..j-1 ( (k+1)⁷ - ∑_m=1..5 (k+1)^m )ⁱ ) with T(n, 0) = n!, read by antidiagonals. A156888

Number of partitions of n into at most 11 parts. A8640

Smaller terms in the pairs of numbers (a < b) in the sequence {a,b}-> {Max[{a,b}]-Min[{a,b}],k·Min[{a,b}]} with k=3 and the first pair {a=1,b=2}. See A075256. A75257

Binomial(n,4) - A290447(n). A290461