Properties of the Number 28175

Twenty-Eight Thousand One Hundred Seventy-Five

Basics

Value: 28174 → 28175 → 28176

Parity: odd

Prime: No

Previous Prime: 28163

Next Prime: 28181

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 ² × 7 ² × 23

Divisors: 1, 5, 7, 23, 25, 35, 49, 115, 161, 175

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111000001111

Octal: 67017

Duodecimal: 1437B

Hexadecimal: 6e0f

Square: 793830625

Square Root: 167.8541033159452

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) = 23·n². A244632

a(n) = ∑_k=0..n 2^n-k*p(k), where p(k) is the partition function A000041. A259401

Number of (w,x,y) with all terms in {0,...,n} and w>floor((x+y)/3). A212974

Abelian orders m for which there exist at least 4 groups of order m. A350323

Indices of pentagonal pyramidal numbers which are the sum of two other such numbers: k such that A002411(k) = A002411(i)+A002411(j) for some i,j>0. A172437

Expansion of 1/(1-x⁵-x⁶-x⁷-x⁸-x⁹-x¹⁰-x¹¹-x¹²). A17843

Numerator of n*(n-2)*(2·n-1)/(2*(n-1)). A22997

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, -1, 1), (0, 1, -1), (1, 0, 0), (1, 1, 0)}. A149884

Integers of the form A164577(k)/3. A164619

Numbers k such that k = (sum of distinct prime factors of k)*(product of distinct prime factors of k). A68999