223656412 has 12 divisors (see below), whose sum is σ = 447312880. Its totient is φ = 95852736.

The previous prime is 223656401. The next prime is 223656457. The reversal of 223656412 is 214656322.

223656412 is an admirable number.

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, 3993837 + ... + 3993892.

Almost surely, 2^223656412 is an apocalyptic number.

It is an amenable number.

223656412 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

223656412 is a wasteful number, since it uses less digits than its factorization.

223656412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7987740 (or 7987738 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 223656412 is about 14955.1466726341. The cubic root of 223656412 is about 607.0071189479.

The spelling of 223656412 in words is "two hundred twenty-three million, six hundred fifty-six thousand, four hundred twelve".