12287487 has 4 divisors (see below), whose sum is σ = 16383320. Its totient is φ = 8191656.

The previous prime is 12287479. The next prime is 12287489. The reversal of 12287487 is 78478221.

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

It is not a de Polignac number, because 12287487 - 2³ = 12287479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12287489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2047912 + ... + 2047917.

It is an arithmetic number, because the mean of its divisors is an integer number (4095830).

Almost surely, 2^12287487 is an apocalyptic number.

12287487 is a deficient number, since it is larger than the sum of its proper divisors (4095833).

12287487 is an equidigital number, since it uses as much as digits as its factorization.

12287487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4095832.

The product of its digits is 50176, while the sum is 39.

The square root of 12287487 is about 3505.3511949589. The cubic root of 12287487 is about 230.7567199457.

The spelling of 12287487 in words is "twelve million, two hundred eighty-seven thousand, four hundred eighty-seven".