Properties of the Number 69230

Sixty-Nine Thousand Two Hundred Thirty

Basics

Value: 69229 → 69230 → 69231

Parity: even

Prime: No

Previous Prime: 69221

Next Prime: 69233

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 5 × 7 × 23 × 43

Divisors: 1, 2, 5, 7, 10, 14, 23, 35, 43, 46

Polygonal

Triangular: No

Square: No

Pentagonal: Yes

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000111001101110

Octal: 207156

Duodecimal: 34092

Hexadecimal: 10e6e

Square: 4792792900

Square Root: 263.1159440246828

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

Sum of all partitions of n into distinct parts. A66189

Expansion of (-1 + ∏_k>=1 1 / (1 + (-x)^k))⁵. A341244

Pentagonal numbers (A000326) in which parity of digits alternates. A297644

a(n) = (A001359(n+1)² - 1)/24, where A001359 = lesser of twin primes; or: pentagonal numbers (A000326) whose indices are twin ranks (A002822). A308344

G.f. satisfies: A(x) = A(x²)³ + x·A(x²)². A195200

Number of primes p such that n < p < n + τ(n)² where τ(n) = A000005(n). A69230

Decimal part of 1/a(n) starts with the n-th prime (leading zeros excluded). A99406