172373238 has 32 divisors (see below), whose sum is σ = 387676800. Its totient is φ = 56764008.

The previous prime is 172373231. The next prime is 172373239. The reversal of 172373238 is 832373271.

172373238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172373231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14748 + ... + 23711.

It is an arithmetic number, because the mean of its divisors is an integer number (12114900).

Almost surely, 2^172373238 is an apocalyptic number.

172373238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

172373238 is an abundant number, since it is smaller than the sum of its proper divisors (215303562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172373238 is a wasteful number, since it uses less digits than its factorization.

172373238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38553 (or 38547 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

The square root of 172373238 is about 13129.0989028189. The cubic root of 172373238 is about 556.5317510818.

The spelling of 172373238 in words is "one hundred seventy-two million, three hundred seventy-three thousand, two hundred thirty-eight".