Properties of the Number 28740

Twenty-Eight Thousand Seven Hundred Forty

Basics

Value: 28739 → 28740 → 28741

Parity: even

Prime: No

Previous Prime: 28729

Next Prime: 28751

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 5 × 479

Divisors: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111000001000100

Octal: 70104

Duodecimal: 14770

Hexadecimal: 7044

Square: 825987600

Square Root: 169.52875862224676

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 the number of even parts is a part. A240573

Expansion of ∏_m>=1 ((1+q^2·m-1)/(1+q^2·m))⁵. A29842

a(n) = prime(n) + Fibonacci(n). A4397

a(1) = 1, a(2) = 2; then a(n) = smallest number such that there are a(n-1) composite numbers between a(n) and a(n+1) exclusive. A82281

Numbers n with property that n² is a sum of some 70 successive primes. A166256

Expansion of e.g.f. exp(log(1+x) + log(1+x)²). A189423

Sum of absolute values of coefficients of expansion of (1-x)(1-x²)(1-x³)...(1-xⁿ). A61553

Numbers whose base-13 representation has exactly 5 runs. A43660

Expansion of (η(q³)η(q¹⁵)/(η(q)η(q⁵)))² in powers of q. A93065

Numbers that are not Keith numbers in any base. A320122