223644642 has 16 divisors (see below), whose sum is σ = 481696320. Its totient is φ = 68813712.

The previous prime is 223644601. The next prime is 223644643. The reversal of 223644642 is 246446322.

223644642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (223644643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1433542 + ... + 1433697.

It is an arithmetic number, because the mean of its divisors is an integer number (30106020).

Almost surely, 2^223644642 is an apocalyptic number.

223644642 is an abundant number, since it is smaller than the sum of its proper divisors (258051678).

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

223644642 is a wasteful number, since it uses less digits than its factorization.

223644642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2867257.

The product of its digits is 55296, while the sum is 33.

The square root of 223644642 is about 14954.7531574413. The cubic root of 223644642 is about 606.9964707710.

The spelling of 223644642 in words is "two hundred twenty-three million, six hundred forty-four thousand, six hundred forty-two".