12757287 has 8 divisors (see below), whose sum is σ = 17057536. Its totient is φ = 8480952.

The previous prime is 12757247. The next prime is 12757291. The reversal of 12757287 is 78275721.

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

It is not a de Polignac number, because 12757287 - 2¹⁵ = 12724519 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 (12757247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4693 + ... + 6894.

It is an arithmetic number, because the mean of its divisors is an integer number (2132192).

Almost surely, 2^12757287 is an apocalyptic number.

12757287 is a deficient number, since it is larger than the sum of its proper divisors (4300249).

12757287 is a wasteful number, since it uses less digits than its factorization.

12757287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11957.

The product of its digits is 54880, while the sum is 39.

The square root of 12757287 is about 3571.7344526154. The cubic root of 12757287 is about 233.6609341631.

The spelling of 12757287 in words is "twelve million, seven hundred fifty-seven thousand, two hundred eighty-seven".