172828234 has 4 divisors (see below), whose sum is σ = 259242354. Its totient is φ = 86414116.

The previous prime is 172828231. The next prime is 172828241. The reversal of 172828234 is 432828271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 432828271 = 89 ⋅4863239.

It can be written as a sum of positive squares in only one way, i.e., 140304025 + 32524209 = 11845^2 + 5703^2 .

It is a junction number, because it is equal to n+sod(n) for n = 172828193 and 172828202.

It is not an unprimeable number, because it can be changed into a prime (172828231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43207057 + ... + 43207060.

Almost surely, 2^172828234 is an apocalyptic number.

172828234 is a deficient number, since it is larger than the sum of its proper divisors (86414120).

172828234 is an equidigital number, since it uses as much as digits as its factorization.

172828234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86414119.

The product of its digits is 43008, while the sum is 37.

The square root of 172828234 is about 13146.4152528360. The cubic root of 172828234 is about 557.0209941729.

Adding to 172828234 its sum of digits (37), we get a palindrome (172828271).

The spelling of 172828234 in words is "one hundred seventy-two million, eight hundred twenty-eight thousand, two hundred thirty-four".