223988 has 6 divisors (see below), whose sum is σ = 391986. Its totient is φ = 111992.

The previous prime is 223969. The next prime is 223999. The reversal of 223988 is 889322.

It is a happy number.

223988 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 183184 + 40804 = 428^2 + 202^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 27995 + ... + 28002.

It is an arithmetic number, because the mean of its divisors is an integer number (65331).

2²²³⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

223988 is a deficient number, since it is larger than the sum of its proper divisors (167998).

223988 is a wasteful number, since it uses less digits than its factorization.

223988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56001 (or 55999 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 223988 is about 473.2737051644. The cubic root of 223988 is about 60.7306949221.

The spelling of 223988 in words is "two hundred twenty-three thousand, nine hundred eighty-eight".