172173036 has 24 divisors (see below), whose sum is σ = 459128320. Its totient is φ = 49192272.

The previous prime is 172173031. The next prime is 172173037. The reversal of 172173036 is 630371271.

It is a junction number, because it is equal to n+sod(n) for n = 172172994 and 172173012.

It is not an unprimeable number, because it can be changed into a prime (172173031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1024756 + ... + 1024923.

Almost surely, 2^172173036 is an apocalyptic number.

It is an amenable number.

172173036 is an abundant number, since it is smaller than the sum of its proper divisors (286955284).

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

172173036 is a wasteful number, since it uses less digits than its factorization.

172173036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049693 (or 2049691 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 172173036 is about 13121.4723259244. The cubic root of 172173036 is about 556.3162073111.

The spelling of 172173036 in words is "one hundred seventy-two million, one hundred seventy-three thousand, thirty-six".