12288757 has 4 divisors (see below), whose sum is σ = 13234060. Its totient is φ = 11343456.

The previous prime is 12288743. The next prime is 12288767. The reversal of 12288757 is 75788221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75788221 = 139 ⋅545239.

It can be written as a sum of positive squares in 2 ways, for example, as 2961841 + 9326916 = 1721^2 + 3054^2 .

It is a cyclic number.

It is not a de Polignac number, because 12288757 - 2¹¹ = 12286709 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 (12288707) 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, 472632 + ... + 472657.

It is an arithmetic number, because the mean of its divisors is an integer number (3308515).

Almost surely, 2^12288757 is an apocalyptic number.

It is an amenable number.

12288757 is a deficient number, since it is larger than the sum of its proper divisors (945303).

12288757 is an equidigital number, since it uses as much as digits as its factorization.

12288757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945302.

The product of its digits is 62720, while the sum is 40.

The square root of 12288757 is about 3505.5323418848. The cubic root of 12288757 is about 230.7646697930.

The spelling of 12288757 in words is "twelve million, two hundred eighty-eight thousand, seven hundred fifty-seven".