223788 has 24 divisors (see below), whose sum is σ = 553392. Its totient is φ = 70144.

The previous prime is 223781. The next prime is 223823. The reversal of 223788 is 887322.

223788 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 10.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (223781) by changing a digit.

223788 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345 + ... + 752.

It is an arithmetic number, because the mean of its divisors is an integer number (23058).

2²²³⁷⁸⁸ is an apocalyptic number.

It is an amenable number.

223788 is an abundant number, since it is smaller than the sum of its proper divisors (329604).

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

223788 is a wasteful number, since it uses less digits than its factorization.

223788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121 (or 1119 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 223788 is about 473.0623637534. The cubic root of 223788 is about 60.7126139596.

The spelling of 223788 in words is "two hundred twenty-three thousand, seven hundred eighty-eight".