12172036 has 6 divisors (see below), whose sum is σ = 21301070. Its totient is φ = 6086016.

The previous prime is 12172019. The next prime is 12172049. The reversal of 12172036 is 63027121.

12172036 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10497600 + 1674436 = 3240^2 + 1294^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12171998 and 12172016.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1521501 + ... + 1521508.

Almost surely, 2^12172036 is an apocalyptic number.

It is an amenable number.

12172036 is a deficient number, since it is larger than the sum of its proper divisors (9129034).

12172036 is a wasteful number, since it uses less digits than its factorization.

12172036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3043013 (or 3043011 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 12172036 is about 3488.8445078564. The cubic root of 12172036 is about 230.0317284521.

Adding to 12172036 its reverse (63027121), we get a palindrome (75199157).

The spelling of 12172036 in words is "twelve million, one hundred seventy-two thousand, thirty-six".