12986772 has 12 divisors (see below), whose sum is σ = 30302496. Its totient is φ = 4328920.

The previous prime is 12986723. The next prime is 12986783. The reversal of 12986772 is 27768921.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 541104 + ... + 541127.

It is an arithmetic number, because the mean of its divisors is an integer number (2525208).

Almost surely, 2^12986772 is an apocalyptic number.

12986772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12986772 is an abundant number, since it is smaller than the sum of its proper divisors (17315724).

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

12986772 is a wasteful number, since it uses less digits than its factorization.

12986772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082238 (or 1082236 counting only the distinct ones).

The product of its digits is 84672, while the sum is 42.

The square root of 12986772 is about 3603.7164150360. The cubic root of 12986772 is about 235.0536892570.

The spelling of 12986772 in words is "twelve million, nine hundred eighty-six thousand, seven hundred seventy-two".