428128171192 has 16 divisors (see below), whose sum is σ = 802764257040. Its totient is φ = 214057702656.

The previous prime is 428128171187. The next prime is 428128171193. The reversal of 428128171192 is 291171821824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428128171193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 506548 + ... + 1054915.

It is an arithmetic number, because the mean of its divisors is an integer number (50172766065).

Almost surely, 2^428128171192 is an apocalyptic number.

It is an amenable number.

428128171192 is a deficient number, since it is larger than the sum of its proper divisors (374636085848).

428128171192 is a wasteful number, since it uses less digits than its factorization.

428128171192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595742 (or 1595738 counting only the distinct ones).

The product of its digits is 129024, while the sum is 46.

The spelling of 428128171192 in words is "four hundred twenty-eight billion, one hundred twenty-eight million, one hundred seventy-one thousand, one hundred ninety-two".