Properties of the Number 1438

One Thousand Four Hundred Thirty-Eight

Basics

Value: 1437 → 1438 → 1439

Parity: even

Prime: No

Previous Prime: 1433

Next Prime: 1439

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 × 719

Divisors: 1, 2, 719, 1438

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 10110011110

Octal: 2636

Duodecimal: 9BA

Hexadecimal: 59e

Square: 2067844

Square Root: 37.92097045171708

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 unimodular 2 X 2 matrices having all terms in {0,1,...,n}. A210000

Number of compositions (ordered partitions) of n that are concave-down sequences. A70211

Smallest number of complexity n: smallest number requiring n 1's to build using + and *. A5520

Discriminants of real quadratic fields with class number 1 and related continued fraction period length of 24. A51965

Number T(n,k) of equivalence classes of ways of placing k 2 X 2 tiles in an n X 5 rectangle under all symmetry operations of the rectangle; irregular triangle T(n,k), n>=2, 0<=k<=n-n%2, read by rows. A231145

Number of primes less than 1000n. A38812

Semiprimes of form prime - 1. A77065

Number T(n,k) of equivalence classes of ways of placing k 2 X 2 tiles in an n X 8 rectangle under all symmetry operations of the rectangle; irregular triangle T(n,k), n>=2, 0<=k<=4·floor(n/2), read by rows. A238557

One and all numbers of the form 2^k * prime(j) for k > 0 and j already in the sequence. A331683

Number of toothpicks after n-th stage in the I-toothpick structure of A139250. A160164