Properties of the Number 20030

Twenty Thousand Thirty

Basics

Value: 20029 → 20030 → 20031

Parity: even

Prime: No

Previous Prime: 20029

Next Prime: 20047

Digit Sum: 5

Digital Root: 5

Palindrome: No

Factorization: 2 × 5 × 2003

Divisors: 1, 2, 5, 10, 2003, 4006, 10015, 20030

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100111000111110

Octal: 47076

Duodecimal: B712

Hexadecimal: 4e3e

Square: 401200900

Square Root: 141.52738250953416

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

Multiples of 5 with digit sum 5. A69540

Second members D of two non-consecutive numbers such that the sums of their cubes are equal to centered cube numbers and to at least one other sum of two cubes, i.e., A = B³ + (B+1)³ = C³ + D³ = E³ + F³. A352223

Sum of the eighth largest parts in the partitions of n into 9 parts. A326466

Sum of the sixth largest parts in the partitions of n into 8 parts. A308992

a(n) is the number of possible values of numbers of divisors of numbers k with ω(k) = n. A355027

Smallest composite number m such that m and the greatest prime divisor of m begin with n. A197816

a(n) = number of primes less than the square root of the (2ⁿ)-th prime. A249058

a(n) = [(x·y)ⁿ] ∏_k>=1 (1 + x^k + y^k)ⁿ. A382950

Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite EPI = Epistilbite Ca3[Al6Si18O48].16H2O starting with a T1 atom. A19119

Numbers k such that 6·10^k + 91 is prime. A265938