172438396 has 24 divisors (see below), whose sum is σ = 327331760. Its totient is φ = 79011072.

The previous prime is 172438391. The next prime is 172438417. The reversal of 172438396 is 693834271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172438391) 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, 4701 + ... + 19156.

Almost surely, 2^172438396 is an apocalyptic number.

It is an amenable number.

172438396 is a deficient number, since it is larger than the sum of its proper divisors (154893364).

172438396 is a wasteful number, since it uses less digits than its factorization.

172438396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24013 (or 24011 counting only the distinct ones).

The product of its digits is 217728, while the sum is 43.

The square root of 172438396 is about 13131.5801029427. The cubic root of 172438396 is about 556.6018662344.

The spelling of 172438396 in words is "one hundred seventy-two million, four hundred thirty-eight thousand, three hundred ninety-six".