12886390 has 32 divisors (see below), whose sum is σ = 26127360. Its totient is φ = 4533600.

The previous prime is 12886381. The next prime is 12886439. The reversal of 12886390 is 9368821.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1521 + ... + 5299.

It is an arithmetic number, because the mean of its divisors is an integer number (816480).

Almost surely, 2^12886390 is an apocalyptic number.

12886390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12886390 is an abundant number, since it is smaller than the sum of its proper divisors (13240970).

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

12886390 is a wasteful number, since it uses less digits than its factorization.

12886390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3828.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 12886390 is about 3589.7618305397. The cubic root of 12886390 is about 234.4465017992.

The spelling of 12886390 in words is "twelve million, eight hundred eighty-six thousand, three hundred ninety".