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Properties of the Number 20739

Twenty Thousand Seven Hundred Thirty-Nine

Basics

Value: 20738 → 20739 → 20740

Parity: odd

Prime: No

Previous Prime: 20731

Next Prime: 20743

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 31 × 223

Divisors: 1, 3, 31, 93, 223, 669, 6913, 20739

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101000100000011

Octal: 50403

Duodecimal: 10003

Hexadecimal: 5103

Square: 430106121

Square Root: 144.0104162899337

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

First numbers E = a(n) of two non-consecutive numbers (E, F) different from (C, D) = (A352222(n), A352223(n)), 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. A352224
Numbers that are the sum of four fourth powers in exactly two ways. A344193
Mixed partitions of n. A2096
Number of partitions of the (n+5)-multiset {0,...,0,1,2,...,n} with five 0's into distinct multisets. A346815
Number of partitions of the (n+6)-multiset {0,...,0,1,2,...,6} with n 0's into distinct multisets. A346826
Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 96. A31774
Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 96. A31594
Sequence that except for initial 1 is the complement of its inverse Euler transform. A120538
Order 3 perimeter magic squares of magic sum n, all elements distinct and 1 in the set; bracelet symmetry. A382455
Number A(n,k) of partitions of the (n+k)-multiset {0,...,0,1,2,...,k} with n 0's into distinct multisets; square array A(n,k), n>=0, k>=0, read by antidiagonals. A346520