Properties of the Number 1722

One Thousand Seven Hundred Twenty-Two

Basics

Value: 1721 → 1722 → 1723

Parity: even

Prime: No

Previous Prime: 1721

Next Prime: 1723

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 7 × 41

Divisors: 1, 2, 3, 6, 7, 14, 21, 41, 42, 82

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 11010111010

Octal: 3272

Duodecimal: BB6

Hexadecimal: 6ba

Square: 2965284

Square Root: 41.49698784249286

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

Oblong (or promic, pronic, or heteromecic) numbers: a(n) = n*(n+1). A2378

a(n) = 2·n*(2·n-1). A2939

a(n) = n*σ(n). A64987

Products of exactly four distinct primes. A46386

Giuga numbers: composite numbers n such that p divides n/p - 1 for every prime divisor p of n. A7850

Expansion of g.f.: (1+x)/(1-41·x). A170761

Number of line segments (or edges) in regular n-gon with all diagonals drawn. A135565

Triangle P, read by rows, such that P³ transforms column k of P into column k+1 of P, so that column k of P equals column 0 of P^3·k+1, where P³ denotes the matrix cube of P. A113370

Minimum of rad(m (n - m) n) for 0 < m < n, gcd(m,n) = 1, where rad(k) = A007947(k) = product of prime factors of k. A147298

Number of strict integer partitions of n that are empty or have smallest part not dividing all the others. A341450