223445120 has 32 divisors (see below), whose sum is σ = 534175020. Its totient is φ = 89377792.

The previous prime is 223445113. The next prime is 223445143. The reversal of 223445120 is 21544322.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 198922816 + 24522304 = 14104^2 + 4952^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173927 + ... + 175206.

Almost surely, 2^223445120 is an apocalyptic number.

223445120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223445120 is an abundant number, since it is smaller than the sum of its proper divisors (310729900).

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

223445120 is an equidigital number, since it uses as much as digits as its factorization.

223445120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349152 (or 349140 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 223445120 is about 14948.0808132683. The cubic root of 223445120 is about 606.8159087538.

Adding to 223445120 its reverse (21544322), we get a palindrome (244989442).

The spelling of 223445120 in words is "two hundred twenty-three million, four hundred forty-five thousand, one hundred twenty".