12295287 has 8 divisors (see below), whose sum is σ = 18215280. Its totient is φ = 8196840.

The previous prime is 12295277. The next prime is 12295321. The reversal of 12295287 is 78259221.

12295287 is a `hidden beast` number, since 122 + 9 + 528 + 7 = 666.

It is not a de Polignac number, because 12295287 - 2¹⁶ = 12229751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12295277) 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, 227664 + ... + 227717.

It is an arithmetic number, because the mean of its divisors is an integer number (2276910).

Almost surely, 2^12295287 is an apocalyptic number.

12295287 is a deficient number, since it is larger than the sum of its proper divisors (5919993).

12295287 is an equidigital number, since it uses as much as digits as its factorization.

12295287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455390 (or 455384 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 12295287 is about 3506.4636031192. The cubic root of 12295287 is about 230.8055371339.

The spelling of 12295287 in words is "twelve million, two hundred ninety-five thousand, two hundred eighty-seven".