12016005 has 32 divisors (see below), whose sum is σ = 20770560. Its totient is φ = 5913600.

The previous prime is 12015977. The next prime is 12016013. The reversal of 12016005 is 50061021.

It is not a de Polignac number, because 12016005 - 2⁸ = 12015749 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 9405 + ... + 10605.

It is an arithmetic number, because the mean of its divisors is an integer number (649080).

Almost surely, 2^12016005 is an apocalyptic number.

12016005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12016005 is a deficient number, since it is larger than the sum of its proper divisors (8754555).

12016005 is a wasteful number, since it uses less digits than its factorization.

12016005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 12016005 is about 3466.4109681340. The cubic root of 12016005 is about 229.0445874674.

Adding to 12016005 its reverse (50061021), we get a palindrome (62077026).

The spelling of 12016005 in words is "twelve million, sixteen thousand, five".