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Properties of the Number 30744

Thirty Thousand Seven Hundred Forty-Four

Basics

Value: 30743 → 30744 → 30745

Parity: even

Prime: No

Previous Prime: 30727

Next Prime: 30757

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 3 × 3 2 × 7 × 61

Divisors: 1, 2, 3, 4, 6, 7, 8, 9, 12, 14

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111100000011000

Octal: 74030

Duodecimal: 15960

Hexadecimal: 7818

Square: 945193536

Square Root: 175.3396703544295

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

a(n) = 8·a(n-1) - a(n-2); a(0) = 0, a(1) = 1. A1090
Square array T(n,k), n >= 0, k >= 0, read by antidiagonals, where T(n,k) is Chebyshev polynomial of the second kind Un(x), evaluated at x=k. A323182
Numbers n such that p(10n) is prime, where p(n) is the number of partitions of n. A114170
Numbers n such that uphi(n) = uphi(n+1), where uphi(n) is the unitary totient function (A047994). A287055
a(n) = 32·n5 - 32·n3 + 6·n. A242850
Gaussian column reduction of Hankel matrix for central Delannoy numbers. A118384
Denominators of continued fraction convergents to sqrt(15). A41023
a(n) = U(n, (n+3)/2) where U(n, x) is a Chebyshev polynomial of the 2nd kind. A342168
Expansion of e.g.f. exp(x - x4/24). A351930
Number triangle associated to Chebyshev polynomials of the second kind. A228161