223902 has 24 divisors (see below), whose sum is σ = 554736. Its totient is φ = 63936.

The previous prime is 223849. The next prime is 223903. The reversal of 223902 is 209322.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223903) by changing a digit.

223902 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 in 11 ways as a sum of consecutive naturals, for example, 763 + ... + 1014.

It is an arithmetic number, because the mean of its divisors is an integer number (23114).

2²²³⁹⁰² is an apocalyptic number.

223902 is an abundant number, since it is smaller than the sum of its proper divisors (330834).

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

223902 is a wasteful number, since it uses less digits than its factorization.

223902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1792 (or 1789 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 223902 is about 473.1828399255. The cubic root of 223902 is about 60.7229214278.

The spelling of 223902 in words is "two hundred twenty-three thousand, nine hundred two".