223133440 has 72 divisors (see below), whose sum is σ = 545993280. Its totient is φ = 87330816.

The previous prime is 223133437. The next prime is 223133459. The reversal of 223133440 is 44331322.

It is a happy number.

It is a super-3 number, since 3×223133440³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58306 + ... + 62014.

It is an arithmetic number, because the mean of its divisors is an integer number (7583240).

Almost surely, 2^223133440 is an apocalyptic number.

223133440 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 223133440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272996640).

223133440 is an abundant number, since it is smaller than the sum of its proper divisors (322859840).

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

223133440 is an equidigital number, since it uses as much as digits as its factorization.

223133440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3777 (or 3763 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 223133440 is about 14937.6517565513. The cubic root of 223133440 is about 606.5336315517.

Adding to 223133440 its reverse (44331322), we get a palindrome (267464762).

The spelling of 223133440 in words is "two hundred twenty-three million, one hundred thirty-three thousand, four hundred forty".