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Properties of the Number 28025

Twenty-Eight Thousand Twenty-Five

Basics

Value: 28024 → 28025 → 28026

Parity: odd

Prime: No

Previous Prime: 28019

Next Prime: 28027

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 5 2 × 19 × 59

Divisors: 1, 5, 19, 25, 59, 95, 295, 475, 1121, 1475

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110110101111001

Octal: 66571

Duodecimal: 14275

Hexadecimal: 6d79

Square: 785400625

Square Root: 167.40669042783207

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

The convergent sequence An for the ternary continued fraction (3,1;2,2) of period 2. A962
a(n) = smallest k such that A366475(k) >= n, or -1 if no such k exists. A366477
Number of partitions of n containing at least one part m-5 if m is the largest part. A212545
a(n) is the least k such that A366912(k) = n. A366913
Integer log of harmonic numbers. A136133
Coefficient of·in the reduction of n-th polynomial at A158983 by x2->x+2. A192343
First appearance in the decimal expansion of π of the first n digits of the decimal expansion of e. A71918
Number of nonary sequences of length n such that no two consecutive terms have distance 2. A287817
Expansion of 1/((1-3x)*(1-4x)*(1-5x)*(1-6x)). A28025
a(n) = (A364054(n) - A366470(n))/prime(n-1). A366475