172828475 has 6 divisors (see below), whose sum is σ = 214307340. Its totient is φ = 138262760.

The previous prime is 172828471. The next prime is 172828483. The reversal of 172828475 is 574828271.

It is not a de Polignac number, because 172828475 - 2² = 172828471 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172828471) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3456545 + ... + 3456594.

It is an arithmetic number, because the mean of its divisors is an integer number (35717890).

Almost surely, 2^172828475 is an apocalyptic number.

172828475 is a deficient number, since it is larger than the sum of its proper divisors (41478865).

172828475 is an equidigital number, since it uses as much as digits as its factorization.

172828475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6913149 (or 6913144 counting only the distinct ones).

The product of its digits is 250880, while the sum is 44.

The square root of 172828475 is about 13146.4244188296. The cubic root of 172828475 is about 557.0212530851.

It can be divided in two parts, 1728 and 28475, that added together give a palindrome (30203).

The spelling of 172828475 in words is "one hundred seventy-two million, eight hundred twenty-eight thousand, four hundred seventy-five".