Properties of the Number -672400

Six Hundred Seventy-Two Thousand Four Hundred

Basics

Value: -672401 → -672400 → -672399

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ⁴ × 5 ² × 41 ²

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 25, 40

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10100100001010010000

Octal: -2441220

Duodecimal: -285154

Hexadecimal: -a4290

Square: 452121760000

Square Root: 820

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

Triangle of trinomial logarithmic coefficients: A027907(n,k) = ∑_i=0..k T(k,i)*nⁱ/k!. A136590

Squares which are palindromes in base 9. A29995

Squares which repeat with at least two full periods when written in base 2. A71128

Base-9 representation of a(n) is the concatenation of the base-9 representations of 1, 2, ..., n, n-1, ..., 1. A260859

a(n) = x² = A090116(n)² is the least square that is "surrounded" by two closest primes, by prevprime(x²) and nextprime(x²) whose difference nextprime - prevprime = 2n. A90117

a(n) = sigma₂(n)². A356533

Numbers k with the property that it is possible to write the base 2 expansion of k as concat(a₂,b₂), with a₂>0 and b₂>0 such that, converting a₂ and b₂ to base 10 as a and b, we have (a+b)² = k. A258844

Squares of even triangular numbers. A14738

Number of irreducible, unrooted, unoriented self-avoiding chains of length n for the square lattice. A334325

Squares which repeat with at least two full periods when written in base 4. A71130