172238908 has 12 divisors (see below), whose sum is σ = 308428120. Its totient is φ = 84116592.

The previous prime is 172238903. The next prime is 172238921. The reversal of 172238908 is 809832271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172238903) 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, 500523 + ... + 500866.

Almost surely, 2^172238908 is an apocalyptic number.

It is an amenable number.

172238908 is a deficient number, since it is larger than the sum of its proper divisors (136189212).

172238908 is a wasteful number, since it uses less digits than its factorization.

172238908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001436 (or 1001434 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 172238908 is about 13123.9821700580. The cubic root of 172238908 is about 556.3871456136.

The spelling of 172238908 in words is "one hundred seventy-two million, two hundred thirty-eight thousand, nine hundred eight".