428882412100172 has 48 divisors (see below), whose sum is σ = 791934419472000. Its totient is φ = 202669744584960.

The previous prime is 428882412100049. The next prime is 428882412100223. The reversal of 428882412100172 is 271001214288824.

It is a self number, because there is not a number n which added to its sum of digits gives 428882412100172.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80860772 + ... + 86001332.

It is an arithmetic number, because the mean of its divisors is an integer number (16498633739000).

Almost surely, 2^{428882412100172} is an apocalyptic number.

It is an amenable number.

428882412100172 is a deficient number, since it is larger than the sum of its proper divisors (363052007371828).

428882412100172 is a wasteful number, since it uses less digits than its factorization.

428882412100172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5143206 (or 5143204 counting only the distinct ones).

The product of its (nonzero) digits is 917504, while the sum is 50.

Adding to 428882412100172 its reverse (271001214288824), we get a palindrome (699883626388996).

The spelling of 428882412100172 in words is "four hundred twenty-eight trillion, eight hundred eighty-two billion, four hundred twelve million, one hundred thousand, one hundred seventy-two".