172431226 has 8 divisors (see below), whose sum is σ = 282160224. Its totient is φ = 78377820.

The previous prime is 172431209. The next prime is 172431229. The reversal of 172431226 is 622134271.

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

It is a junction number, because it is equal to n+sod(n) for n = 172431194 and 172431203.

It is not an unprimeable number, because it can be changed into a prime (172431229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3918870 + ... + 3918913.

It is an arithmetic number, because the mean of its divisors is an integer number (35270028).

Almost surely, 2^172431226 is an apocalyptic number.

172431226 is a deficient number, since it is larger than the sum of its proper divisors (109728998).

172431226 is a wasteful number, since it uses less digits than its factorization.

172431226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7837796.

The product of its digits is 4032, while the sum is 28.

The square root of 172431226 is about 13131.3070941167. The cubic root of 172431226 is about 556.5941516132.

Adding to 172431226 its reverse (622134271), we get a palindrome (794565497).

It can be divided in two parts, 17243122 and 6, that added together give a triangular number (17243128 = T₅₈₇₂).

The spelling of 172431226 in words is "one hundred seventy-two million, four hundred thirty-one thousand, two hundred twenty-six".