Properties of the Number -721970

Seven Hundred Twenty-One Thousand Nine Hundred Seventy

Basics

Value: -721971 → -721970 → -721969

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 × 5 × 23 × 43 × 73

Divisors: 1, 2, 5, 10, 23, 43, 46, 73, 86, 115

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10110000010000110010

Octal: -2602062

Duodecimal: -2A9982

Hexadecimal: -b0432

Square: 521240680900

Square Root: 849.6881780982951

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(n) = the smallest number x >= 2 such that for m = x to x + n - 1, A006530(m) increases. A100384

a(n) is the first term of the first maximal run of n consecutive numbers with increasing greatest prime factors. A358890

Erroneous version of A358890. A79749

Numbers k such that gpf(k) < gpf(k+1) < ... < gpf(k+9), where gpf(x) = A006530(x), the greatest prime factor of x. Numbers initiating an uphill gpf run of length 10. A100383

Smallest k such that sopf(k)<=sopf(k+1)<=...<=sopf(k+n). A189882