223304240 has 80 divisors (see below), whose sum is σ = 545911488. Its totient is φ = 84784128.

The previous prime is 223304239. The next prime is 223304243. The reversal of 223304240 is 42403322.

223304240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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

It is not an unprimeable number, because it can be changed into a prime (223304243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288494 + ... + 289266.

Almost surely, 2^223304240 is an apocalyptic number.

223304240 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 223304240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272955744).

223304240 is an abundant number, since it is smaller than the sum of its proper divisors (322607248).

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

223304240 is a wasteful number, since it uses less digits than its factorization.

223304240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966 (or 960 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 223304240 is about 14943.3677596451. The cubic root of 223304240 is about 606.6883514099.

Adding to 223304240 its reverse (42403322), we get a palindrome (265707562).

The spelling of 223304240 in words is "two hundred twenty-three million, three hundred four thousand, two hundred forty".