Properties of the Number 1623

One Thousand Six Hundred Twenty-Three

Basics

Value: 1622 → 1623 → 1624

Parity: odd

Prime: No

Previous Prime: 1621

Next Prime: 1627

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 3 × 541

Divisors: 1, 3, 541, 1623

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 11001010111

Octal: 3127

Duodecimal: B33

Hexadecimal: 657

Square: 2634129

Square Root: 40.28647415696737

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

Number of compositions of n that avoid the pattern 23-1. A189076

Partial sums of A299285. A299286

Number of partitions p of n such that (number of even numbers in p) = (number of odd numbers in p). A241638

a(n) = 2·n² + 2·n - 1. A142463

Number of integer partitions of n that cannot be partitioned into constant multisets with distinct block-sums. A381717

a(n) = least k such that the remainder when 17^k is divided by k is n. A128157

Number of integer points in the convex hull in Rⁿ of parking functions of length n. A333331

Numbers j in pairs (j,k), with j <> k +- 1, such that the sum of their cubes is equal to a centered cube number. A352135

First members C of two non-consecutive numbers such that the sums of their cubes are equal to centered cube numbers and to at least one other sum of two cubes, i.e., A = B³ + (B+1)³ = C³ + D³ = E³ + F³. A352222

T(n,k) gives the number of permutations of the set [n] that contain k occurrences of the subword (132); irregular array read by rows (n >= 0 and 0 <= k <= max(0, floor((n-1)/2))). A197365