Properties of the Number -212625

Two Hundred Twelve Thousand Six Hundred Twenty-Five

Basics

Value: -212626 → -212625 → -212624

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ⁵ × 5 ³ × 7

Divisors: 1, 3, 5, 7, 9, 15, 21, 25, 27, 35

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110011111010010001

Octal: -637221

Duodecimal: -A3069

Hexadecimal: -33e91

Square: 45209390625

Square Root: 461.1127844681819

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

Positive integers k = p₁^e_1·p₂^e_2·p₃^e_3, such that the points (p₁, e₁), (p₂, e₂) and (p₃, e₃) lie on a straight line with nonzero slope. A389340

Triangle read by rows: T(n, k) = (k+1)*S2(n+1, k+1), for n >= k >= 0, and S2 = A048993 (Stirling2). A321331

Odd numbers divisible by exactly 9 primes (counted with multiplicity). A46322

a(n) = ∏_k=1..n (2·k-1)^2·n-2·k+1. A136411

Numbers having factorization ∏_i=1..m p(i)^e(i) such that m > 1 and p(i) + e(i) is the same for each i. A219302

Number of maximal matchings in the n-triangular honeycomb rook graph. A289900

G.f.: -x*(x-1)*(1+x)/(1-x-7·x²-x³+x⁴). A171064

Number of distinct (unordered) pairs of partitions of a 10-element set that have Rand distance n. A192103

Squared area of quadrilateral with sides prime(n), prime(n+1), prime(n+2), prime(n+3) of odd primes configured as a cyclic quadrilateral. Sequence index starts at n=2 to omit the even prime. A330496