Properties of the Number 873

Eight Hundred Seventy-Three

Basics

Value: 872 → 873 → 874

Parity: odd

Prime: No

Previous Prime: 863

Next Prime: 877

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 97

Divisors: 1, 3, 9, 97, 291, 873

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101101001

Octal: 1551

Duodecimal: 609

Hexadecimal: 369

Square: 762129

Square Root: 29.546573405388315

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 knapsack partitions of n. A108917

a(n) = ∑_k=1..n k!. A7489

Odd numbers of the form p^1+4k * r², where p is prime of the form 1+4m, r > 1, and gcd(p,r) = 1. (Euler's criteria for odd perfect numbers). A228058

Number of partitions of n into parts 3k and 3k+1 with at least one part of each type. A35618

Number of sum-full subsets of {1,...,n}; subsets A such that there is a solution to x+y=z for x,y,z in A. A93971

a(n) = ∑_k=0..n binomial(n,k)*binomial(2·k,k). A26375

Number of Golomb rulers of length n. A169942

Numbers whose sum of digits is 18. A235228

Number of integer partitions of n containing no prime indices of the parts. A324756

Generalized 26-gonal (or icosihexagonal) numbers: m*(12·m - 11) with m = 0, +1, -1, +2, -2, +3, -3, ... A316724