223743816 has 128 divisors (see below), whose sum is σ = 671328000. Its totient is φ = 68834304.

The previous prime is 223743811. The next prime is 223743857. The reversal of 223743816 is 618347322.

It is a happy number.

It is a super-2 number, since 2×223743816² = 100122590396483712, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223743811) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 143296 + ... + 144848.

It is an arithmetic number, because the mean of its divisors is an integer number (5244750).

Almost surely, 2^223743816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223743816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335664000).

223743816 is an abundant number, since it is smaller than the sum of its proper divisors (447584184).

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

223743816 is a wasteful number, since it uses less digits than its factorization.

223743816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620 (or 1610 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 223743816 is about 14958.0685919005. The cubic root of 223743816 is about 607.0861806063.

The spelling of 223743816 in words is "two hundred twenty-three million, seven hundred forty-three thousand, eight hundred sixteen".