12757812 has 12 divisors (see below), whose sum is σ = 29768256. Its totient is φ = 4252600.

The previous prime is 12757807. The next prime is 12757861. The reversal of 12757812 is 21875721.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 531564 + ... + 531587.

It is an arithmetic number, because the mean of its divisors is an integer number (2480688).

Almost surely, 2^12757812 is an apocalyptic number.

12757812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12757812 is an abundant number, since it is smaller than the sum of its proper divisors (17010444).

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

12757812 is a wasteful number, since it uses less digits than its factorization.

12757812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063158 (or 1063156 counting only the distinct ones).

The product of its digits is 7840, while the sum is 33.

The square root of 12757812 is about 3571.8079455648. The cubic root of 12757812 is about 233.6641393981.

The spelling of 12757812 in words is "twelve million, seven hundred fifty-seven thousand, eight hundred twelve".