228450886638 has 32 divisors (see below), whose sum is σ = 495804177792. Its totient is φ = 69755992800.

The previous prime is 228450886613. The next prime is 228450886669. The reversal of 228450886638 is 836688054822.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11168628 + ... + 11189063.

It is an arithmetic number, because the mean of its divisors is an integer number (15493880556).

Almost surely, 2^228450886638 is an apocalyptic number.

228450886638 is an abundant number, since it is smaller than the sum of its proper divisors (267353291154).

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

228450886638 is a wasteful number, since it uses less digits than its factorization.

228450886638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22357840.

The product of its (nonzero) digits is 35389440, while the sum is 60.

The spelling of 228450886638 in words is "two hundred twenty-eight billion, four hundred fifty million, eight hundred eighty-six thousand, six hundred thirty-eight".