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Properties of the Number 22987

Twenty-Two Thousand Nine Hundred Eighty-Seven

Basics

Value: 22986 → 22987 → 22988

Parity: odd

Prime: No

Previous Prime: 22973

Next Prime: 22993

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 127 × 181

Divisors: 1, 127, 181, 22987

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 101100111001011

Octal: 54713

Duodecimal: 11377

Hexadecimal: 59cb

Square: 528402169

Square Root: 151.61464309228182

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 n such that φ(n) = φ(n+12) and n is not divisible by 2. A217141
a(n) = A273059(4n+2). A275918
Decimal encoding of the prime factorization of n is a multiple of n. A67598
Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 33 ones. A31801
The prime factors of n are also prime factors of the decimal encoding (A067599) of the prime factorization of n. A67671
Number of walks within N3 (the first octant of Z3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, 1), (-1, 1, -1), (1, -1, -1), (1, 0, 1)}. A148544
Numbers such that the sum of the reverse of their aliquot parts is equal to the reverse of the sum of their aliquot parts. A278948
Number of 6Xn binary arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling two exactly once. A268891
Number of 6Xn binary arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling two not more than once. A269000
Number of nX6 0..1 arrays with every element unequal to 0, 1, 2 or 4 king-move adjacent elements, with upper left element zero. A303798