12649494 has 64 divisors (see below), whose sum is σ = 31062528. Its totient is φ = 3379200.

The previous prime is 12649493. The next prime is 12649499. The reversal of 12649494 is 49494621.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12649493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19414 + ... + 20054.

It is an arithmetic number, because the mean of its divisors is an integer number (485352).

Almost surely, 2^12649494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12649494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15531264).

12649494 is an abundant number, since it is smaller than the sum of its proper divisors (18413034).

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

12649494 is a wasteful number, since it uses less digits than its factorization.

12649494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693.

The product of its digits is 62208, while the sum is 39.

The square root of 12649494 is about 3556.6127143674. The cubic root of 12649494 is about 233.0009639728. Note that the first 3 decimals are identical.

The spelling of 12649494 in words is "twelve million, six hundred forty-nine thousand, four hundred ninety-four".