Search a number
-
+
2287237 is a prime number
BaseRepresentation
bin1000101110011010000101
311022012111111
420232122011
51041142422
6121005021
725304221
oct10563205
94265444
102287237
111322487
12923771
136210c4
14437781
15302a77
hex22e685

2287237 has 2 divisors, whose sum is σ = 2287238. Its totient is φ = 2287236.

The previous prime is 2287223. The next prime is 2287247. The reversal of 2287237 is 7327822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1718721 + 568516 = 1311^2 + 754^2 .

It is a cyclic number.

It is not a de Polignac number, because 2287237 - 211 = 2285189 is a prime.

It is equal to p168637 and since 2287237 and 168637 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 2287199 and 2287208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2287247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1143618 + 1143619.

It is an arithmetic number, because the mean of its divisors is an integer number (1143619).

22287237 is an apocalyptic number.

It is an amenable number.

2287237 is a deficient number, since it is larger than the sum of its proper divisors (1).

2287237 is an equidigital number, since it uses as much as digits as its factorization.

2287237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9408, while the sum is 31.

The square root of 2287237 is about 1512.3613986082. The cubic root of 2287237 is about 131.7559962801.

It can be divided in two parts, 228723 and 7, that multiplied together give a palindrome (1601061).

The spelling of 2287237 in words is "two million, two hundred eighty-seven thousand, two hundred thirty-seven".