172196836 has 12 divisors (see below), whose sum is σ = 344393728. Its totient is φ = 73798632.

The previous prime is 172196833. The next prime is 172196879. The reversal of 172196836 is 638691271.

172196836 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 172196792 and 172196801.

It is not an unprimeable number, because it can be changed into a prime (172196833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3074916 + ... + 3074971.

Almost surely, 2^172196836 is an apocalyptic number.

It is an amenable number.

172196836 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

172196836 is a wasteful number, since it uses less digits than its factorization.

172196836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6149898 (or 6149896 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 172196836 is about 13122.3792050070. The cubic root of 172196836 is about 556.3418398879.

The spelling of 172196836 in words is "one hundred seventy-two million, one hundred ninety-six thousand, eight hundred thirty-six".