ℕ atory
Play Now

Properties of the Number 8154

Eight Thousand One Hundred Fifty-Four

Basics

Value: 8153 → 8154 → 8155

Parity: even

Prime: No

Previous Prime: 8147

Next Prime: 8161

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 3 × 151

Divisors: 1, 2, 3, 6, 9, 18, 27, 54, 151, 302

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 1111111011010

Octal: 17732

Duodecimal: 4876

Hexadecimal: 1fda

Square: 66487716

Square Root: 90.29950165975447

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

Composites whose prime factorization in base 4 is an anagram of the number in base 4. A260048
Let A(n) = #{(i,j,k): i2 + j2 + k2 <= n}, V(n) = (4/3)π*n3/2, P(n) = A(n) - V(n); sequence gives values of n where |P(n)| sets a new record. A92
Sum of terms of n-th group in A075383. A75386
Number of integer partitions of n > 0 that are not the first sums of any composition with all parts > 1. A391620
Numbers k where |cos(k)| (or |cosec(k)| or |cot(k)|) decreases monotonically to 0; also numbers k where |tan(k)| (or |sec(k)|, or |sin(k)|) increases. A4112
Sin(n) decreases monotonically to -1. A46964
Least k such that tan(k) > tan(a(n-1)), for n >= 1, where a(0) = 0. A24814
T(n,k)=Number of nXk 0..3 arrays x(i,j) with each element horizontally, vertically, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, and upper left element zero. A230787
Triangle read by rows: T(n,k) is the number of configurations with exactly k polyomino matchings in a generalized game of memory played on the path of length 5n. A334058
Length of period of the continued fraction expansion of sqrt(2n+1). A59926