Properties of the Number 3857

Three Thousand Eight Hundred Fifty-Seven

Basics

Value: 3856 → 3857 → 3858

Parity: odd

Prime: No

Previous Prime: 3853

Next Prime: 3863

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 7 × 19 × 29

Divisors: 1, 7, 19, 29, 133, 203, 551, 3857

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 111100010001

Octal: 7421

Duodecimal: 2295

Hexadecimal: f11

Square: 14876449

Square Root: 62.10475022089695

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 partitions of n such that if the length is k then k is not a part. A229816

a(n) = n³ - 4·n² + 6·n - 2. A188377

Number T(n,k) of permutations p of [n] such that the up-down signature of p has nonnegative partial sums with a maximal value of k; triangle T(n,k), n>=0, 0<=k<=n, read by rows. A262125

a(n) = Frobenius number for 7 successive primes = F[p(n), p(n+1), p(n+2), p(n+3), p(n+4), p(n+5), p(n+6)]. A138993

Number of partitions of n containing a clique of size 2. A183559

Number of 6-dimensional partitions of n. A416

Positions of 8 in A274640. A275188

Write 0, 1, 2, 3, 4, ... in a triangular spiral, then a(n) is the sequence found by reading the terms along the line from 0 in the direction 0, 7, ... A62725

Number of imprimitive (periodic) n-bead binary necklaces with beads of 2 colors where the colors may be swapped but turning over is not allowed. A115118

Odd squarefree numbers n such that the cyclotomic polynomial φ(n,x) has height 3. A152941