228727668 has 24 divisors (see below), whose sum is σ = 574751968. Its totient is φ = 70377696.

The previous prime is 228727633. The next prime is 228727679. The reversal of 228727668 is 866727822.

It is a happy number.

228727668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×228727668² = 104632692217436448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 732946 + ... + 733257.

Almost surely, 2^228727668 is an apocalyptic number.

It is an amenable number.

228727668 is an abundant number, since it is smaller than the sum of its proper divisors (346024300).

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

228727668 is a wasteful number, since it uses less digits than its factorization.

228727668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466223 (or 1466221 counting only the distinct ones).

The product of its digits is 903168, while the sum is 48.

The square root of 228727668 is about 15123.7451710877. The cubic root of 228727668 is about 611.5606975962.

The spelling of 228727668 in words is "two hundred twenty-eight million, seven hundred twenty-seven thousand, six hundred sixty-eight".