ℕ atory
Play Now

Properties of the Number 28472

Twenty-Eight Thousand Four Hundred Seventy-Two

Basics

Value: 28471 → 28472 → 28473

Parity: even

Prime: No

Previous Prime: 28463

Next Prime: 28477

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 3 × 3559

Divisors: 1, 2, 4, 8, 3559, 7118, 14236, 28472

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110111100111000

Octal: 67470

Duodecimal: 14588

Hexadecimal: 6f38

Square: 810654784

Square Root: 168.7364809399556

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

All 81 combinations of prefixing and following a(n) by a single digit are nonprime. A32734
McKay-Thompson series of class 9c for the Monster group. A58095
Number of partitions of triangular numbers n*(n+1)/2 into (n-2) distinct parts for n>=3. A104384
E.g.f. A(x) satisfies A(x) = exp( 2·x * A(x)1/2 * exp(x·A(x)1/2) ). A380425
Composite numbers k such that all the decimal concatenations ik and ikj (i, j = 1...9) are also composite. A32737
Irregular array T(n,k) of the numbers of non-extendable (complete) non-self-adjacent simple paths starting at each of a minimal subset of nodes within a square lattice bounded by rectangles with nodal dimensions n and 9, n >= 2. A214042
Number of n X 2 0..2 arrays with no element equal to any value at offset (-2,-1) (-2,1) or (-1,-1) and new values introduced in order 0..2. A275260
Numbers k where there are 8 primes between 10·k and 10·k + 30. A282059
T(n,k)=Number of nXk 0..2 arrays with no element equal to any value at offset (-2,-1) (-2,1) or (-1,-1) and new values introduced in order 0..2. A275266
Numbers whose maximal digit in their primorial base expansion is not larger than the maximal exponent in their prime factorization. A351038