228144666 has 16 divisors (see below), whose sum is σ = 480304800. Its totient is φ = 72045648.

The previous prime is 228144617. The next prime is 228144667. The reversal of 228144666 is 666441822.

228144666 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 (228144667) 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, 1000521 + ... + 1000748.

It is an arithmetic number, because the mean of its divisors is an integer number (30019050).

Almost surely, 2^228144666 is an apocalyptic number.

228144666 is an abundant number, since it is smaller than the sum of its proper divisors (252160134).

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

228144666 is a wasteful number, since it uses less digits than its factorization.

228144666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001293.

The product of its digits is 110592, while the sum is 39.

The square root of 228144666 is about 15104.4584808592. The cubic root of 228144666 is about 611.0406548880.

The spelling of 228144666 in words is "two hundred twenty-eight million, one hundred forty-four thousand, six hundred sixty-six".