428740231172 has 24 divisors (see below), whose sum is σ = 833947555392. Its totient is φ = 191204904800.

The previous prime is 428740231163. The next prime is 428740231177. The reversal of 428740231172 is 271132047824.

It is not an unprimeable number, because it can be changed into a prime (428740231177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91923104 + ... + 91927767.

It is an arithmetic number, because the mean of its divisors is an integer number (34747814808).

Almost surely, 2^428740231172 is an apocalyptic number.

It is an amenable number.

428740231172 is a deficient number, since it is larger than the sum of its proper divisors (405207324220).

428740231172 is a wasteful number, since it uses less digits than its factorization.

428740231172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183850939 (or 183850937 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 41.

Adding to 428740231172 its reverse (271132047824), we get a palindrome (699872278996).

The spelling of 428740231172 in words is "four hundred twenty-eight billion, seven hundred forty million, two hundred thirty-one thousand, one hundred seventy-two".