Search a number
-
+
233540 = 22511677
BaseRepresentation
bin111001000001000100
3102212100122
4321001010
524433130
65001112
71661606
oct710104
9385318
10233540
1114a50a
12b3198
13823b8
1461176
15492e5
hex39044

233540 has 12 divisors (see below), whose sum is σ = 490476. Its totient is φ = 93408.

The previous prime is 233509. The next prime is 233549. The reversal of 233540 is 45332.

It can be written as a sum of positive squares in 2 ways, for example, as 145924 + 87616 = 382^2 + 296^2 .

It is not an unprimeable number, because it can be changed into a prime (233549) by changing a digit.

233540 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5819 + ... + 5858.

It is an arithmetic number, because the mean of its divisors is an integer number (40873).

2233540 is an apocalyptic number.

233540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

233540 is an abundant number, since it is smaller than the sum of its proper divisors (256936).

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

233540 is a wasteful number, since it uses less digits than its factorization.

233540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11686 (or 11684 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 233540 is about 483.2597645159. The cubic root of 233540 is about 61.5819956378.

Adding to 233540 its reverse (45332), we get a palindrome (278872).

The spelling of 233540 in words is "two hundred thirty-three thousand, five hundred forty".

Divisors: 1 2 4 5 10 20 11677 23354 46708 58385 116770 233540