223288394 has 12 divisors (see below), whose sum is σ = 389615634. Its totient is φ = 95694984.

The previous prime is 223288369. The next prime is 223288423. The reversal of 223288394 is 493882322.

223288394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 208947025 + 14341369 = 14455^2 + 3787^2 .

It is a super-3 number, since 3×223288394³ (a number of 26 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1139129 + ... + 1139324.

Almost surely, 2^223288394 is an apocalyptic number.

223288394 is a deficient number, since it is larger than the sum of its proper divisors (166327240).

223288394 is a wasteful number, since it uses less digits than its factorization.

223288394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2278469 (or 2278462 counting only the distinct ones).

The product of its digits is 165888, while the sum is 41.

The square root of 223288394 is about 14942.8375484712. The cubic root of 223288394 is about 606.6740005688.

The spelling of 223288394 in words is "two hundred twenty-three million, two hundred eighty-eight thousand, three hundred ninety-four".