Properties of the Number 28749

Twenty-Eight Thousand Seven Hundred Forty-Nine

Basics

Value: 28748 → 28749 → 28750

Parity: odd

Prime: No

Previous Prime: 28729

Next Prime: 28751

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 7 × 37 ²

Divisors: 1, 3, 7, 21, 37, 111, 259, 777, 1369, 4107

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111000001001101

Octal: 70115

Duodecimal: 14779

Hexadecimal: 704d

Square: 826505001

Square Root: 169.55530071336608

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

Euler transform of Fibonacci numbers. A166861

Composite numbers which divide the concatenation of their prime factors, with multiplicity, in ascending order. A259047

The smallest composite number which divides the concatenation of its ascending ordered prime factors, with repetition, when written in base n. A371641

Numbers n such that A234519(n) = n. A234524

a(n) = 21·n². A64762

Regular triangle where T(n,k) is the number of multiset partitions of strongly normal multisets of size n into k blocks, where a multiset is strongly normal if it spans an initial interval of positive integers with weakly decreasing multiplicities. A317449

Composites k such that the concatenation of the prime factors of k, with multiplicity, in some order is divisible by k. A322843

a(n) = 46·n² - 1. A158634

0-sequence of reduction of (n²+n+1) by x² -> x+1. A192299

Floor(1/{(5+n⁴)^1/4}), where {}=fractional part. A184629