223168440 has 64 divisors (see below), whose sum is σ = 730373760. Its totient is φ = 54101120.

The previous prime is 223168417. The next prime is 223168441. The reversal of 223168440 is 44861322.

It is a super-3 number, since 3×223168440³ (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 (30).

It is a junction number, because it is equal to n+sod(n) for n = 223168398 and 223168407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223168441) 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, 83214 + ... + 85853.

It is an arithmetic number, because the mean of its divisors is an integer number (11412090).

Almost surely, 2^223168440 is an apocalyptic number.

223168440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223168440 is an abundant number, since it is smaller than the sum of its proper divisors (507205320).

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

223168440 is a wasteful number, since it uses less digits than its factorization.

223168440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169092 (or 169088 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 223168440 is about 14938.8232468290. The cubic root of 223168440 is about 606.5653428710.

The spelling of 223168440 in words is "two hundred twenty-three million, one hundred sixty-eight thousand, four hundred forty".