172117162 has 16 divisors (see below), whose sum is σ = 310587840. Its totient is φ = 69882048.

The previous prime is 172117159. The next prime is 172117217. The reversal of 172117162 is 261711271.

It is a self number, because there is not a number n which added to its sum of digits gives 172117162.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323263 + ... + 323794.

It is an arithmetic number, because the mean of its divisors is an integer number (19411740).

Almost surely, 2^172117162 is an apocalyptic number.

172117162 is a deficient number, since it is larger than the sum of its proper divisors (138470678).

172117162 is a wasteful number, since it uses less digits than its factorization.

172117162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647085.

The product of its digits is 1176, while the sum is 28.

The square root of 172117162 is about 13119.3430475767. The cubic root of 172117162 is about 556.2560217839.

The spelling of 172117162 in words is "one hundred seventy-two million, one hundred seventeen thousand, one hundred sixty-two".