Properties of the Number -40530

Forty Thousand Five Hundred Thirty

Basics

Value: -40531 → -40530 → -40529

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 5 × 7 × 193

Divisors: 1, 2, 3, 5, 6, 7, 10, 14, 15, 21

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -1001111001010010

Octal: -117122

Duodecimal: -1B556

Hexadecimal: -9e52

Square: 1642680900

Square Root: 201.32063977645214

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 triangle sequence of coefficients of polynomials with roots that are inverse primes: a(n)=Prime[n](a(n-1); p(x,n)=If[n == 0, 1, a[n - 1]*(x - a[n - 1])*Product[x + Prime[i], {i, 1, n - 1}]]. A144455

Numbers n for which 2 < A257993(A276086(A276086(n))) < A257993(n), where A276086 converts the primorial base expansion of n into its prime product form, and A257993 returns the index of the least prime not present in its argument. A328762

Sums of terms of groups in A075626. A75629

Products of 5 distinct primes that are sandwiched between twin prime numbers. A376380

Wiener index of the n-sunlet graph. A180574

Gaps between first elements of prime quintuples of the form (p, p+2, p+6, p+12, p+14). The quintuples are abutting: twin/cousin/sexy/twin pairs. A342502

a(n) = ∑_k=0..n (-1)^k * binomial(n+4·k+4,n-k) * Catalan(k). A360060

Triangle T(n, k) = (f(n, 1 + (n mod 3)) + f(k, 1 + (k mod 3))) mod n!, read by rows (see formula for f(n, k)). A117754

The smallest composite number k that shares exactly n distinct prime factors with sopfr(k), the sum of the primes dividing k, with repetition. A372524

a(n) = [(x·y)ⁿ] ∏_k>=1 1 / (1 - x^k - y^k)^k. A382947