12285815 has 8 divisors (see below), whose sum is σ = 15610320. Its totient is φ = 9250432.

The previous prime is 12285811. The next prime is 12285817. The reversal of 12285815 is 51858221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12285815 - 2² = 12285811 is a prime.

It is a nialpdrome in base 16.

It is a zygodrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12285811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72185 + ... + 72354.

It is an arithmetic number, because the mean of its divisors is an integer number (1951290).

Almost surely, 2^12285815 is an apocalyptic number.

12285815 is a deficient number, since it is larger than the sum of its proper divisors (3324505).

12285815 is a wasteful number, since it uses less digits than its factorization.

12285815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144561.

The product of its digits is 6400, while the sum is 32.

The square root of 12285815 is about 3505.1126943367. The cubic root of 12285815 is about 230.7462528546.

The spelling of 12285815 in words is "twelve million, two hundred eighty-five thousand, eight hundred fifteen".