Search a number
-
+
211144 = 2326393
BaseRepresentation
bin110011100011001000
3101201122011
4303203020
523224034
64305304
71536403
oct634310
9351564
10211144
111346aa
12a2234
137514b
1456d3a
1542864
hex338c8

211144 has 8 divisors (see below), whose sum is σ = 395910. Its totient is φ = 105568.

The previous prime is 211129. The next prime is 211151. The reversal of 211144 is 441112.

It can be written as a sum of positive squares in only one way, i.e., 184900 + 26244 = 430^2 + 162^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13189 + ... + 13204.

2211144 is an apocalyptic number.

It is an amenable number.

211144 is a deficient number, since it is larger than the sum of its proper divisors (184766).

211144 is a wasteful number, since it uses less digits than its factorization.

211144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26399 (or 26395 counting only the distinct ones).

The product of its digits is 32, while the sum is 13.

The square root of 211144 is about 459.5040805042. The cubic root of 211144 is about 59.5469581989.

Subtracting from 211144 its product of digits (32), we obtain a palindrome (211112).

Adding to 211144 its reverse (441112), we get a palindrome (652256).

The spelling of 211144 in words is "two hundred eleven thousand, one hundred forty-four", and thus it is an iban number.

Divisors: 1 2 4 8 26393 52786 105572 211144