Properties of the Number -130305

One Hundred Thirty Thousand Three Hundred Five

Basics

Value: -130306 → -130305 → -130304

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 7 × 17 × 73

Divisors: 1, 3, 5, 7, 15, 17, 21, 35, 51, 73

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11111110100000001

Octal: -376401

Duodecimal: -634A9

Hexadecimal: -1fd01

Square: 16979393025

Square Root: 360.9778386549512

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

Number of holes in a sheet of paper when you fold it n times and cut off the four corners. A274230

a(n) = binomial(2ⁿ-1,2). A134057

Triangle T(n, k) = c(n, q)/c(k, q) if k <= floor(n/2), otherwise c(n, q)/c(n-k, q), where c(n, q) = ∏_j=1..n (1 - q^j) and q = 2, read by rows. A174387

Triangular numbers which are sums of 5 consecutive primes. A173421

a(n) = (n²-1)*(2·n²-1). A33595

Triangular numbers in which the sum of the external digits equals the sum of the internal digits. A88289

Row sums of triangle A093922. A93925

Triangular numbers t such that all the digits needed to write the consecutive triangular numbers from 0 to t fill exactly an equilateral triangle (no holes, no overlaps). A158030

a(n) = ((2^b-1)/φ(n))*∑_d∣n Moebius(n/d)*d^b-1 for b = 9. A160956

Number of length 4 arrays x(i), i=1..4 with x(i) in i..i+n and no value appearing more than 3 times. A250362