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Properties of the Number 13438

Thirteen Thousand Four Hundred Thirty-Eight

Basics

Value: 13437 → 13438 → 13439

Parity: even

Prime: No

Previous Prime: 13421

Next Prime: 13441

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 6719

Divisors: 1, 2, 6719, 13438

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 11010001111110

Octal: 32176

Duodecimal: 793A

Hexadecimal: 347e

Square: 180579844

Square Root: 115.92238782909882

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 ways to write the n-th prime as a sum of distinct primes. A70215
Sets with a congruence property. A2703
Numbers k with property that for every base b >= 2, there is a number m such that m+s(m) = k, where s(m) = sum of digits in the base-b expansion of m. A230624
Zero, together with positive numbers k such that prime(k) - k is a square. A64370
Number of (undirected) Hamiltonian paths on the first n cells of the 7 X ceiling(n/7) knight graph. A389757
a(n) = a(1) + a(2) + ... + a(n-1) + a(m) for n >= 4, where m = 2·n - 2 - 2p+1 and p is the unique integer such that 2p < n - 1 <= 2p+1, starting with a(1) = 1 and a(2) = a(3) = 2. A49955
Monotonic ordering of nonnegative differences 5i-3j, for 40>=i>=0, j>=0. A192150
Triangle in which row n has n semiprimes such that (p+1)(q+1) is the same for each semiprime pq and (p+1)(q+1) is as small as possible. A180333
Integers of the form: 0/3 + 1/3 + 2/3 + 3/3 + 5/3 + 7/3 + 11/3 + 13/3 + 17/3 + .... A182155
Number of nondecreasing arrangements of n+2 numbers in 0..6 with each number being the sum mod 7 of two others. A183909