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Properties of the Number -19862

Nineteen Thousand Eight Hundred Sixty-Two

Basics

Value: -19863 → -19862 → -19861

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 × 9931

Divisors: 1, 2, 9931, 19862

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

7925 Try Today's Challenge

Representations

Binary: -100110110010110

Octal: -46626

Duodecimal: -B5B2

Hexadecimal: -4d96

Square: 394499044

Square Root: 140.93260800822497

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) = (-4·n3 + 27·n2 - 20·n + 3)/3. A161711
a(n) = floor(n*φ16), where φ is the golden ratio, A001622. A4931
Number of ordered pairs of partitions of n with no common parts. A54440
a(n) = (A114043(n) - 1)/2. A115005
Number of integer partitions of n with fewer parts than distinct divisors of parts. A371173
Transform of A059226 applied to sequence 0, 1, 0, 0, 0, 0, ... A59271
a(n) = ∑k=0..n φ(k2 + 1), where φ is the Euler totient function (A000010). A333170
f-amicable numbers where f(n) = n+1. A66505
Even semiprime equivalent to the Euclid-Mullin sequence: a(1) = 4, a(n) = smallest semiprime divisor of product of previous terms plus 2. A193689
Numbers k such that 3·10k + 97 is prime. A295401