229780 has 12 divisors (see below), whose sum is σ = 482580. Its totient is φ = 91904.

The previous prime is 229777. The next prime is 229781. The reversal of 229780 is 87922.

It can be written as a sum of positive squares in 2 ways, for example, as 66564 + 163216 = 258^2 + 404^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5725 + ... + 5764.

It is an arithmetic number, because the mean of its divisors is an integer number (40215).

2²²⁹⁷⁸⁰ is an apocalyptic number.

229780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

229780 is an abundant number, since it is smaller than the sum of its proper divisors (252800).

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

229780 is a wasteful number, since it uses less digits than its factorization.

229780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11498 (or 11496 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 229780 is about 479.3537316012. The cubic root of 229780 is about 61.2497153950.

The spelling of 229780 in words is "two hundred twenty-nine thousand, seven hundred eighty".