223394644 has 12 divisors (see below), whose sum is σ = 426480768. Its totient is φ = 101543000.

The previous prime is 223394623. The next prime is 223394663. The reversal of 223394644 is 446493322.

223394644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 2538532 + ... + 2538619.

It is an arithmetic number, because the mean of its divisors is an integer number (35540064).

Almost surely, 2^223394644 is an apocalyptic number.

It is an amenable number.

223394644 is a deficient number, since it is larger than the sum of its proper divisors (203086124).

223394644 is a wasteful number, since it uses less digits than its factorization.

223394644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5077166 (or 5077164 counting only the distinct ones).

The product of its digits is 124416, while the sum is 37.

The square root of 223394644 is about 14946.3923406286. The cubic root of 223394644 is about 606.7702123035.

The spelling of 223394644 in words is "two hundred twenty-three million, three hundred ninety-four thousand, six hundred forty-four".