Search a number
-
+
389238 = 23292237
BaseRepresentation
bin1011111000001110110
3201202221020
41133001312
544423423
612202010
73210543
oct1370166
9652836
10389238
11246493
12169306
13108225
14a1bca
157a4e3
hex5f076

389238 has 16 divisors (see below), whose sum is σ = 805680. Its totient is φ = 125216.

The previous prime is 389231. The next prime is 389269. The reversal of 389238 is 832983.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 389199 and 389208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 945 + ... + 1292.

It is an arithmetic number, because the mean of its divisors is an integer number (50355).

2389238 is an apocalyptic number.

389238 is an abundant number, since it is smaller than the sum of its proper divisors (416442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

389238 is a wasteful number, since it uses less digits than its factorization.

389238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2271.

The product of its digits is 10368, while the sum is 33.

The square root of 389238 is about 623.8894132777. The cubic root of 389238 is about 73.0138211149.

Adding to 389238 its reverse (832983), we get a palindrome (1222221).

The spelling of 389238 in words is "three hundred eighty-nine thousand, two hundred thirty-eight".

Divisors: 1 2 3 6 29 58 87 174 2237 4474 6711 13422 64873 129746 194619 389238