12711040 has 32 divisors (see below), whose sum is σ = 30388860. Its totient is φ = 5084160.

The previous prime is 12711037. The next prime is 12711067. The reversal of 12711040 is 4011721.

It can be written as a sum of positive squares in 2 ways, for example, as 10705984 + 2005056 = 3272^2 + 1416^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9291 + ... + 10570.

Almost surely, 2^12711040 is an apocalyptic number.

12711040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12711040 is an abundant number, since it is smaller than the sum of its proper divisors (17677820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12711040 is an equidigital number, since it uses as much as digits as its factorization.

12711040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19880 (or 19868 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 12711040 is about 3565.2545491171. The cubic root of 12711040 is about 233.3782407896.

Adding to 12711040 its reverse (4011721), we get a palindrome (16722761).

The spelling of 12711040 in words is "twelve million, seven hundred eleven thousand, forty".