12015385 has 4 divisors (see below), whose sum is σ = 14418468. Its totient is φ = 9612304.

The previous prime is 12015373. The next prime is 12015427. The reversal of 12015385 is 58351021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3697929 + 8317456 = 1923^2 + 2884^2 .

It is a cyclic number.

It is not a de Polignac number, because 12015385 - 2⁷ = 12015257 is a prime.

It is a super-3 number, since 3×12015385³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1201534 + ... + 1201543.

It is an arithmetic number, because the mean of its divisors is an integer number (3604617).

Almost surely, 2^12015385 is an apocalyptic number.

It is an amenable number.

12015385 is a deficient number, since it is larger than the sum of its proper divisors (2403083).

12015385 is an equidigital number, since it uses as much as digits as its factorization.

12015385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2403082.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 12015385 is about 3466.3215373072. The cubic root of 12015385 is about 229.0406479970.

The spelling of 12015385 in words is "twelve million, fifteen thousand, three hundred eighty-five".