223206320 has 80 divisors (see below), whose sum is σ = 538036992. Its totient is φ = 86062080.

The previous prime is 223206317. The next prime is 223206331. The reversal of 223206320 is 23602322.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-3 number, since 3×223206320³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 223206292 and 223206301.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258209 + ... + 259071.

Almost surely, 2^223206320 is an apocalyptic number.

223206320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223206320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269018496).

223206320 is an abundant number, since it is smaller than the sum of its proper divisors (314830672).

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

223206320 is a wasteful number, since it uses less digits than its factorization.

223206320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990 (or 984 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 223206320 is about 14940.0910305125. The cubic root of 223206320 is about 606.5996598429.

Adding to 223206320 its reverse (23602322), we get a palindrome (246808642).

The spelling of 223206320 in words is "two hundred twenty-three million, two hundred six thousand, three hundred twenty".