172347238 has 16 divisors (see below), whose sum is σ = 295633440. Its totient is φ = 73817856.

The previous prime is 172347229. The next prime is 172347239. The reversal of 172347238 is 832743271.

It is a junction number, because it is equal to n+sod(n) for n = 172347197 and 172347206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172347239) 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, 30870 + ... + 36022.

It is an arithmetic number, because the mean of its divisors is an integer number (18477090).

Almost surely, 2^172347238 is an apocalyptic number.

172347238 is a deficient number, since it is larger than the sum of its proper divisors (123286202).

172347238 is a wasteful number, since it uses less digits than its factorization.

172347238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7551.

The product of its digits is 56448, while the sum is 37.

The square root of 172347238 is about 13128.1086985140. The cubic root of 172347238 is about 556.5037680970.

The spelling of 172347238 in words is "one hundred seventy-two million, three hundred forty-seven thousand, two hundred thirty-eight".