12005715 has 16 divisors (see below), whose sum is σ = 19525536. Its totient is φ = 6297600.

The previous prime is 12005699. The next prime is 12005717. The reversal of 12005715 is 51750021.

It is not a de Polignac number, because 12005715 - 2⁴ = 12005699 is a prime.

It is a super-2 number, since 2×12005715² = 288274385322450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12005691 and 12005700.

It is not an unprimeable number, because it can be changed into a prime (12005717) 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 15 ways as a sum of consecutive naturals, for example, 5646 + ... + 7475.

It is an arithmetic number, because the mean of its divisors is an integer number (1220346).

Almost surely, 2^12005715 is an apocalyptic number.

12005715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12005715 is a deficient number, since it is larger than the sum of its proper divisors (7519821).

12005715 is a wasteful number, since it uses less digits than its factorization.

12005715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13190.

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 12005715 is about 3464.9264061449. The cubic root of 12005715 is about 228.9791874197.

Adding to 12005715 its reverse (51750021), we get a palindrome (63755736).

It can be divided in two parts, 12005 and 715, that added together give a triangular number (12720 = T₁₅₉).

The spelling of 12005715 in words is "twelve million, five thousand, seven hundred fifteen".