223903872 has 256 divisors, whose sum is σ = 725587200. Its totient is φ = 67682304.

The previous prime is 223903859. The next prime is 223903907. The reversal of 223903872 is 278309322.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2173773 + ... + 2173875.

It is an arithmetic number, because the mean of its divisors is an integer number (2834325).

Almost surely, 2^223903872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223903872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (362793600).

223903872 is an abundant number, since it is smaller than the sum of its proper divisors (501683328).

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

223903872 is a wasteful number, since it uses less digits than its factorization.

223903872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 223903872 is about 14963.4177914005. The cubic root of 223903872 is about 607.2309065804.

It can be divided in two parts, 22390 and 3872, that added together give a palindrome (26262).

The spelling of 223903872 in words is "two hundred twenty-three million, nine hundred three thousand, eight hundred seventy-two".