229240 has 32 divisors (see below), whose sum is σ = 563760. Its totient is φ = 83200.

The previous prime is 229237. The next prime is 229247. The reversal of 229240 is 42922.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180 + ... + 700.

2²²⁹²⁴⁰ is an apocalyptic number.

229240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 229240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281880).

229240 is an abundant number, since it is smaller than the sum of its proper divisors (334520).

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

229240 is a wasteful number, since it uses less digits than its factorization.

229240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543 (or 539 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 229240 is about 478.7901419202. The cubic root of 229240 is about 61.2016973058.

It can be divided in two parts, 2292 and 40, that added together give a palindrome (2332).

The spelling of 229240 in words is "two hundred twenty-nine thousand, two hundred forty".