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Properties of the Number 28723

Twenty-Eight Thousand Seven Hundred Twenty-Three

Basics

Value: 28722 → 28723 → 28724

Parity: odd

Prime: Yes

Previous Prime: 28711

Next Prime: 28729

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 28723

Divisors: 1, 28723

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111000000110011

Octal: 70063

Duodecimal: 14757

Hexadecimal: 7033

Square: 825010729

Square Root: 169.47861221994944

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

Numbers k such that 2k - 15 is prime. A59612
Primes of the form 2·n2 + 82·n + 39. A217620
Primes which are the sum of three positive 4th powers. A85318
Primes that remain prime through 3 iterations of function f(x) = 5x + 2. A23283
Primes p of the form p = A161671(k) = A161671(k+1). A220220
Primes whose digit reversal is a pentagonal number (A000326). A115706
Primes p from A031924 such that A052180(p) = 23. A52238
Number of walks within N3 (the first octant of Z3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, -1, 1), (-1, 1, -1), (0, 0, 1), (1, 0, 0)}. A149814
a(n) is the smallest prime p = prime(k) such that A300845(k) = prime(n), or 0 if no such k exists. A300854
Primes p not of the form k2+s where k > 1 and 1 <= s < (k+1)2, such that q = k4+s is prime. A302485