Properties of the Number 28357

Twenty-Eight Thousand Three Hundred Fifty-Seven

Basics

Value: 28356 → 28357 → 28358

Parity: odd

Prime: No

Previous Prime: 28351

Next Prime: 28387

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 7 × 4051

Divisors: 1, 7, 4051, 28357

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111011000101

Octal: 67305

Duodecimal: 144B1

Hexadecimal: 6ec5

Square: 804119449

Square Root: 168.39536810732056

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

Exponential generating function x·exp(x/(1-x)). A6152

Exponential Riordan array [e^x/(1-x),x]. A129652

Triangular array read by rows. T(n,k) is the number of partial permutations (injective partial functions) of {1,2,...,n} that have exactly k elements in a cycle. The k elements are not necessarily in the same cycle. A fixed point is considered to be in a cycle. A206703

a(n) = (A001333(n+1) - 2·A005409(floor((n+3)/2)) - 1) / 4. A107769

Number T(n,k) of proper multisets of nonempty words with a total of n letters over k-ary alphabet such that all k letters occur at least once in the multiset; triangle T(n,k), n>=2, 1<=k<=n-1, read by rows. A320264

Numbers m such that numbers m, m + 1, m + 2 and m + 3 have k, 2k, 3k and 4k divisors respectively. A340157

a(n)-th prime is sum of first k primes for some k. A20641

The index of prime(n) in A337182. A338222

Number of ways to put n labeled objects into n labeled boxes so that no two nonempty boxes are adjacent. A219614

Numbers k such that k, k+1, k+2, k+3 have 2, 3, 4, 5 prime factors respectively, counted with multiplicity. A363391