Properties of the Number 830

Eight Hundred Thirty

Basics

Value: 829 → 830 → 831

Parity: even

Prime: No

Previous Prime: 829

Next Prime: 839

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2 × 5 × 83

Divisors: 1, 2, 5, 10, 83, 166, 415, 830

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100111110

Octal: 1476

Duodecimal: 592

Hexadecimal: 33e

Square: 688900

Square Root: 28.809720581775867

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

Sum of totient function: a(n) = ∑_k=1..n φ(k), cf. A000010. A2088

Indices k such that (1/3)*(prime(k)+prime(k+1)+prime(k+2)) is a prime. A64113

a(n) = ∑_d∣n (-1)^d-1*d². A321543

Number of down/up (initially descending) compositions of n. A25049

Sums of four consecutive primes. A34963

Numbers k such that k¹⁶ + 1 is prime. A6313

Numbers that are the sum of 11 positive 5th powers. A3356

Snowflake (or E-toothpick) sequence (see Comments lines for definition). A161330

Triangle read by rows: row n is the first row of the matrix M[n]^n-1, where M[n] is the n X n tridiagonal matrix with main diagonal (1,4,4,...) and super- and subdiagonals (1,1,1,...). A124576

Number of length n inversion sequences avoiding the patterns 010, 120, and 210. A279558