223665252 has 12 divisors (see below), whose sum is σ = 521885616. Its totient is φ = 74555080.

The previous prime is 223665251. The next prime is 223665263. The reversal of 223665252 is 252566322.

223665252 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 (12).

It is a super-2 number, since 2×223665252² = 100052289904447008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (223665251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9319374 + ... + 9319397.

It is an arithmetic number, because the mean of its divisors is an integer number (43490468).

Almost surely, 2^223665252 is an apocalyptic number.

It is an amenable number.

223665252 is an abundant number, since it is smaller than the sum of its proper divisors (298220364).

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

223665252 is a wasteful number, since it uses less digits than its factorization.

223665252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18638778 (or 18638776 counting only the distinct ones).

The product of its digits is 43200, while the sum is 33.

The square root of 223665252 is about 14955.4422201418. The cubic root of 223665252 is about 607.0151161435.

The spelling of 223665252 in words is "two hundred twenty-three million, six hundred sixty-five thousand, two hundred fifty-two".