12491492 has 24 divisors (see below), whose sum is σ = 23667000. Its totient is φ = 5734656.

The previous prime is 12491483. The next prime is 12491497. The reversal of 12491492 is 29419421.

It can be written as a sum of positive squares in 4 ways, for example, as 5125696 + 7365796 = 2264^2 + 2714^2 .

It is not an unprimeable number, because it can be changed into a prime (12491497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11384 + ... + 12432.

It is an arithmetic number, because the mean of its divisors is an integer number (986125).

Almost surely, 2^12491492 is an apocalyptic number.

It is an amenable number.

12491492 is a deficient number, since it is larger than the sum of its proper divisors (11175508).

12491492 is a wasteful number, since it uses less digits than its factorization.

12491492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295 (or 1293 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 12491492 is about 3534.3304882255. The cubic root of 12491492 is about 232.0267755462.

The spelling of 12491492 in words is "twelve million, four hundred ninety-one thousand, four hundred ninety-two".