12506990 has 16 divisors (see below), whose sum is σ = 22653648. Its totient is φ = 4971456.

The previous prime is 12506983. The next prime is 12507031. The reversal of 12506990 is 9960521.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2207 + ... + 5466.

It is an arithmetic number, because the mean of its divisors is an integer number (1415853).

Almost surely, 2^12506990 is an apocalyptic number.

12506990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12506990 is a deficient number, since it is larger than the sum of its proper divisors (10146658).

12506990 is a wasteful number, since it uses less digits than its factorization.

12506990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7843.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 12506990 is about 3536.5223030542. The cubic root of 12506990 is about 232.1226932275.

The spelling of 12506990 in words is "twelve million, five hundred six thousand, nine hundred ninety".