172265738 has 16 divisors (see below), whose sum is σ = 263741184. Its totient is φ = 84367920.

The previous prime is 172265719. The next prime is 172265759. The reversal of 172265738 is 837562271.

It is a junction number, because it is equal to n+sod(n) for n = 172265695 and 172265704.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18431 + ... + 26157.

It is an arithmetic number, because the mean of its divisors is an integer number (16483824).

Almost surely, 2^172265738 is an apocalyptic number.

172265738 is a deficient number, since it is larger than the sum of its proper divisors (91475446).

172265738 is a wasteful number, since it uses less digits than its factorization.

172265738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7957.

The product of its digits is 141120, while the sum is 41.

The square root of 172265738 is about 13125.0043047612. The cubic root of 172265738 is about 556.4160339607.

The spelling of 172265738 in words is "one hundred seventy-two million, two hundred sixty-five thousand, seven hundred thirty-eight".