172028128474 has 8 divisors (see below), whose sum is σ = 258044024448. Its totient is φ = 86013453660.

The previous prime is 172028128471. The next prime is 172028128483. The reversal of 172028128474 is 474821820271.

172028128474 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (172028128471) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 245989 + ... + 636055.

It is an arithmetic number, because the mean of its divisors is an integer number (32255503056).

Almost surely, 2^172028128474 is an apocalyptic number.

172028128474 is a deficient number, since it is larger than the sum of its proper divisors (86015895974).

172028128474 is a wasteful number, since it uses less digits than its factorization.

172028128474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610580.

The product of its (nonzero) digits is 401408, while the sum is 46.

The spelling of 172028128474 in words is "one hundred seventy-two billion, twenty-eight million, one hundred twenty-eight thousand, four hundred seventy-four".