Properties of the Number 84720

Eighty-Four Thousand Seven Hundred Twenty

Basics

Value: 84719 → 84720 → 84721

Parity: even

Prime: No

Previous Prime: 84719

Next Prime: 84731

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 ⁴ × 3 × 5 × 353

Divisors: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

603 Try Today's Challenge

Representations

Binary: 10100101011110000

Octal: 245360

Duodecimal: 41040

Hexadecimal: 14af0

Square: 7177478400

Square Root: 291.0670025956223

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

Numbers k for which σ(k) >= 2·k and (σ(k) - 2·k) AND k = k, where AND is bitwise-and, A004198. A388026

E.g.f. A(x) satisfies A(x) = exp( x²*A(x)² ) * (1+x·A(x)). A387974

Triangle T(n,k) read by rows: connected topologies of Goldstone diagrams with n interactions and k external potentials. A328923

Intersection of A108027, A108028, A108029 and A108030. A108109

Number of nX4 0..1 arrays with every element equal to 1, 3, 4 or 6 king-move adjacent elements, with upper left element zero. A298059

a(n) = number |fdw(P,(n))| of entangled P-words with s=2. A211309

Primes p such that p+1 is a product of two or more consecutive integers. A84720

Number of length n arrays of permutations of 0..n-1 with each element moved by -6 to 6 places and the median of every three consecutive elements nondecreasing. A263595