12658490 has 16 divisors (see below), whose sum is σ = 24538248. Its totient is φ = 4673856.

The previous prime is 12658483. The next prime is 12658493. The reversal of 12658490 is 9485621.

It can be written as a sum of positive squares in 4 ways, for example, as 4289041 + 8369449 = 2071^2 + 2893^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12658490.

It is not an unprimeable number, because it can be changed into a prime (12658493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48557 + ... + 48816.

Almost surely, 2^12658490 is an apocalyptic number.

12658490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12658490 is a deficient number, since it is larger than the sum of its proper divisors (11879758).

12658490 is a wasteful number, since it uses less digits than its factorization.

12658490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97393.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 12658490 is about 3557.8771760700. The cubic root of 12658490 is about 233.0561856803.

The spelling of 12658490 in words is "twelve million, six hundred fifty-eight thousand, four hundred ninety".