428666572 has 6 divisors (see below), whose sum is σ = 750166508. Its totient is φ = 214333284.

The previous prime is 428666569. The next prime is 428666599. The reversal of 428666572 is 275666824.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53583318 + ... + 53583325.

Almost surely, 2^428666572 is an apocalyptic number.

It is an amenable number.

428666572 is a deficient number, since it is larger than the sum of its proper divisors (321499936).

428666572 is a wasteful number, since it uses less digits than its factorization.

428666572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107166647 (or 107166645 counting only the distinct ones).

The product of its digits is 967680, while the sum is 46.

The square root of 428666572 is about 20704.2645848627. The cubic root of 428666572 is about 754.0032294467.

The spelling of 428666572 in words is "four hundred twenty-eight million, six hundred sixty-six thousand, five hundred seventy-two".