Properties of the Number 21376

Twenty-One Thousand Three Hundred Seventy-Six

Basics

Value: 21375 → 21376 → 21377

Parity: even

Prime: No

Previous Prime: 21347

Next Prime: 21377

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ⁷ × 167

Divisors: 1, 2, 4, 8, 16, 32, 64, 128, 167, 334

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101001110000000

Octal: 51600

Duodecimal: 10454

Hexadecimal: 5380

Square: 456933376

Square Root: 146.20533505997653

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 integer partitions of n with at least one pair of consecutive divisible parts. A328221

Primitive practical numbers of the form 2ⁱ * prime(k). A308710

Numerators of column 3 of table described in A051714/A051715. A51720

Fibonacci iteration starting with (1, a(n)) leads to a "nine digits anagram". A34587

Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 267", based on the 5-celled von Neumann neighborhood. A280462

Expansion of e.g.f. sinh(tan(x)*tan(x)) (even powers only). A9613

Numbers which can be written in precisely one way as sum of a subset of their proper divisors and that have exactly one subset of their divisors such that the complement has the same sum. A378530

Numerators of continued fraction convergents to sqrt(553). A42058

a(n) = denominator of the continued fraction which has the positive integers which are <= n and are coprime to n as its terms. The terms are written in order from 1 for the integer part, to n-1 for the final term of the continued fraction. A127615

Partial sums of A256970. A256971