12886650 has 72 divisors (see below), whose sum is σ = 39577824. Its totient is φ = 2944800.

The previous prime is 12886649. The next prime is 12886651. The reversal of 12886650 is 5668821.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12886649) and next prime (12886651).

It is not an unprimeable number, because it can be changed into a prime (12886651) 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 35 ways as a sum of consecutive naturals, for example, 1105 + ... + 5195.

It is an arithmetic number, because the mean of its divisors is an integer number (549692).

Almost surely, 2^12886650 is an apocalyptic number.

12886650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12886650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19788912).

12886650 is an abundant number, since it is smaller than the sum of its proper divisors (26691174).

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

12886650 is a wasteful number, since it uses less digits than its factorization.

12886650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4116 (or 4108 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 12886650 is about 3589.7980444588. The cubic root of 12886650 is about 234.4480785449.

The spelling of 12886650 in words is "twelve million, eight hundred eighty-six thousand, six hundred fifty".