12050805 has 32 divisors (see below), whose sum is σ = 21490560. Its totient is φ = 5725440.

The previous prime is 12050803. The next prime is 12050833. The reversal of 12050805 is 50805021.

It is not a de Polignac number, because 12050805 - 2¹ = 12050803 is a prime.

It is a super-2 number, since 2×12050805² = 290443802296050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12050803) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4590 + ... + 6720.

It is an arithmetic number, because the mean of its divisors is an integer number (671580).

Almost surely, 2^12050805 is an apocalyptic number.

12050805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12050805 is a deficient number, since it is larger than the sum of its proper divisors (9439755).

12050805 is a wasteful number, since it uses less digits than its factorization.

12050805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2181.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 12050805 is about 3471.4269400349. The cubic root of 12050805 is about 229.2654892064.

Adding to 12050805 its reverse (50805021), we get a palindrome (62855826).

The spelling of 12050805 in words is "twelve million, fifty thousand, eight hundred five".