Properties of the Number -21373

Twenty-One Thousand Three Hundred Seventy-Three

Basics

Value: -21374 → -21373 → -21372

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 11 × 29 × 67

Divisors: 1, 11, 29, 67, 319, 737, 1943, 21373

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101001101111101

Octal: -51575

Duodecimal: -10451

Hexadecimal: -537d

Square: 456805129

Square Root: 146.19507515644978

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

a(n) = ∑_j=0..n j·Fibonacci(j). A14286

Indices of records in length of English name of n including spaces and dashes (A052360): n such that k < n => A052360(k) < A052360(n). A52362

The smallest magic constant for n X n magic square with prime entries (regarding 1 as a prime). A73502

Consider the 2ⁿ compositions of n and count only those ending in an odd part with row sum A001045. A123638

Products of three distinct strong primes. A363782

Decimal part of n-th root of a(n) starts with digit 3. A34080

Numbers with d digits (d>0) which have at least 2d distinct primes as substrings. A168167

a(n) = Smallest number which has in its English name the letter "T" in the n-th position beginning the count from the end. A173206

E.g.f. A(x) satisfies A(x) = exp(-x·A(x)²) + x. A379856

a(n) is the number of 5 element sets of distinct integer-sided trapezoids whose base angles are 60 degrees that fill an equilateral triangular grid of side n units without partitioning a triangle into 3 element sets of trapezoids. A391452