12169538 has 32 divisors (see below), whose sum is σ = 20139840. Its totient is φ = 5495040.

The previous prime is 12169513. The next prime is 12169567. The reversal of 12169538 is 83596121.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 12169498 and 12169507.

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 15 ways as a sum of consecutive naturals, for example, 113681 + ... + 113787.

It is an arithmetic number, because the mean of its divisors is an integer number (629370).

Almost surely, 2^12169538 is an apocalyptic number.

12169538 is a deficient number, since it is larger than the sum of its proper divisors (7970302).

12169538 is a wasteful number, since it uses less digits than its factorization.

12169538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242.

The product of its digits is 12960, while the sum is 35.

The square root of 12169538 is about 3488.4864913025. The cubic root of 12169538 is about 230.0159913267.

The spelling of 12169538 in words is "twelve million, one hundred sixty-nine thousand, five hundred thirty-eight".