Properties of the Number -216225

Two Hundred Sixteen Thousand Two Hundred Twenty-Five

Basics

Value: -216226 → -216225 → -216224

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 ² × 31 ²

Divisors: 1, 3, 5, 9, 15, 25, 31, 45, 75, 93

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110100110010100001

Octal: -646241

Duodecimal: -A5169

Hexadecimal: -34ca1

Square: 46753250625

Square Root: 465

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

Sum of first n cubes; or n-th triangular number squared. A537

Number of 2 X n 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 1 0 1 vertically. A207069

a(n) = ∑_{k=1..n, gcd(n,k) = 1} k³. A53819

Sum of the cubes of the parts in the partitions of n into two parts. A294270

Sum of the cubes of the parts in the partitions of n into two distinct parts. A294287

Odd squares k for which A379113(k) > 1, i.e., k that have a proper unitary divisor d > 1 such that A048720(A065621(σ(d)),σ(k/d)) is equal to σ(k). A379121

Number of minimal total dominating sets in the n-path graph. A302655

a(n) = A000931(n)². A133037

Squares of odd triangular numbers. A14736

Squares containing 2k digits in which the sum of the first k digits = that of the rest. A68897