12015345 has 16 divisors (see below), whose sum is σ = 20355840. Its totient is φ = 6031104.

The previous prime is 12015307. The next prime is 12015359. The reversal of 12015345 is 54351021.

It is not a de Polignac number, because 12015345 - 2⁶ = 12015281 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23305 + ... + 23814.

It is an arithmetic number, because the mean of its divisors is an integer number (1272240).

Almost surely, 2^12015345 is an apocalyptic number.

12015345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12015345 is a deficient number, since it is larger than the sum of its proper divisors (8340495).

12015345 is a wasteful number, since it uses less digits than its factorization.

12015345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47144.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 12015345 is about 3466.3157674972. The cubic root of 12015345 is about 229.0403938330.

Adding to 12015345 its reverse (54351021), we get a palindrome (66366366).

The spelling of 12015345 in words is "twelve million, fifteen thousand, three hundred forty-five".