Properties of the Number 29820

Twenty-Nine Thousand Eight Hundred Twenty

Basics

Value: 29819 → 29820 → 29821

Parity: even

Prime: No

Previous Prime: 29819

Next Prime: 29833

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 5 × 7 × 71

Divisors: 1, 2, 3, 4, 5, 6, 7, 10, 12, 14

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111010001111100

Octal: 72174

Duodecimal: 15310

Hexadecimal: 747c

Square: 889232400

Square Root: 172.68468374467957

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

a(n) = n*(n+1)*(2·n+1)/3. A6331

Number of maximal antichains of nonempty, non-singleton subsets of {1..n}. A326360

Sum of the parts in the partitions of 4n into 4 parts with smallest part equal to 1 minus the number of these partitions. A239057

Lower triangular array called S1hat(5) related to partition number array A144890. A144891

Numbers k such that ψ(k²) = k, ψ = A002322; indices of 1 in A341857. A341858

Lexicographically earliest sequence of distinct positive integers with no finite subset summing to a primorial number (A002110). A353980

Number of rooted trees with n nodes with every leaf at height 8. A48813

1/12 of product of three numbers: n-th prime, previous and following number. A127921

McKay-Thompson series of class 14A for the Monster group with a(0) = 1. A134782

Numbers k such that 11^φ(k) == 1 (mod k²), where φ(k) = A000010(k). A253016