12009850 has 12 divisors (see below), whose sum is σ = 22338414. Its totient is φ = 4803920.

The previous prime is 12009827. The next prime is 12009859. The reversal of 12009850 is 5890021.

It can be written as a sum of positive squares in 3 ways, for example, as 10712529 + 1297321 = 3273^2 + 1139^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (12009859) 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 5 ways as a sum of consecutive naturals, for example, 120049 + ... + 120148.

Almost surely, 2^12009850 is an apocalyptic number.

12009850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12009850 is a deficient number, since it is larger than the sum of its proper divisors (10328564).

12009850 is a wasteful number, since it uses less digits than its factorization.

12009850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240209 (or 240204 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 12009850 is about 3465.5230485455. The cubic root of 12009850 is about 229.0054726863.

Adding to 12009850 its reverse (5890021), we get a palindrome (17899871).

The spelling of 12009850 in words is "twelve million, nine thousand, eight hundred fifty".