12085215 has 32 divisors (see below), whose sum is σ = 20756736. Its totient is φ = 5982720.

The previous prime is 12085211. The next prime is 12085267. The reversal of 12085215 is 51258021.

12085215 = T₂ + T₃ + ... + T₄₁₆.

It is not a de Polignac number, because 12085215 - 2² = 12085211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12085211) 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, 20880 + ... + 21450.

It is an arithmetic number, because the mean of its divisors is an integer number (648648).

Almost surely, 2^12085215 is an apocalyptic number.

12085215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12085215 is a deficient number, since it is larger than the sum of its proper divisors (8671521).

12085215 is a wasteful number, since it uses less digits than its factorization.

12085215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679.

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 12085215 is about 3476.3795822666. The cubic root of 12085215 is about 229.4834975627.

The spelling of 12085215 in words is "twelve million, eighty-five thousand, two hundred fifteen".