12987292 has 12 divisors (see below), whose sum is σ = 22780296. Its totient is φ = 6478640.

The previous prime is 12987253. The next prime is 12987307. The reversal of 12987292 is 29278921.

12987292 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between odd and even.

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, 1678 + ... + 5365.

It is an arithmetic number, because the mean of its divisors is an integer number (1898358).

Almost surely, 2^12987292 is an apocalyptic number.

It is an amenable number.

12987292 is a deficient number, since it is larger than the sum of its proper divisors (9793004).

12987292 is a wasteful number, since it uses less digits than its factorization.

12987292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7508 (or 7506 counting only the distinct ones).

The product of its digits is 36288, while the sum is 40.

The square root of 12987292 is about 3603.7885620552. The cubic root of 12987292 is about 235.0568264566.

The spelling of 12987292 in words is "twelve million, nine hundred eighty-seven thousand, two hundred ninety-two".