12491064 has 32 divisors (see below), whose sum is σ = 34698000. Its totient is φ = 4163616.

The previous prime is 12491033. The next prime is 12491069. The reversal of 12491064 is 46019421.

12491064 = 352² + 353² + ... + 432².

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12491069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28699 + ... + 29130.

Almost surely, 2^12491064 is an apocalyptic number.

It is an amenable number.

12491064 is an abundant number, since it is smaller than the sum of its proper divisors (22206936).

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

12491064 is a wasteful number, since it uses less digits than its factorization.

12491064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57844 (or 57834 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 12491064 is about 3534.2699387568. The cubic root of 12491064 is about 232.0241255133.

The spelling of 12491064 in words is "twelve million, four hundred ninety-one thousand, sixty-four".