428571717906 has 64 divisors (see below), whose sum is σ = 893497651200. Its totient is φ = 136890146880.

The previous prime is 428571717841. The next prime is 428571717913. The reversal of 428571717906 is 609717175824.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55662045 + ... + 55669743.

It is an arithmetic number, because the mean of its divisors is an integer number (13960900800).

Almost surely, 2^428571717906 is an apocalyptic number.

428571717906 is an abundant number, since it is smaller than the sum of its proper divisors (464925933294).

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

428571717906 is a wasteful number, since it uses less digits than its factorization.

428571717906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10639.

The product of its (nonzero) digits is 5927040, while the sum is 57.

The spelling of 428571717906 in words is "four hundred twenty-eight billion, five hundred seventy-one million, seven hundred seventeen thousand, nine hundred six".