12886550 has 12 divisors (see below), whose sum is σ = 23969076. Its totient is φ = 5154600.

The previous prime is 12886499. The next prime is 12886553. The reversal of 12886550 is 5568821.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12886550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12886553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128816 + ... + 128915.

It is an arithmetic number, because the mean of its divisors is an integer number (1997423).

Almost surely, 2^12886550 is an apocalyptic number.

12886550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12886550 is a deficient number, since it is larger than the sum of its proper divisors (11082526).

12886550 is a wasteful number, since it uses less digits than its factorization.

12886550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257743 (or 257738 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 12886550 is about 3589.7841160716. The cubic root of 12886550 is about 234.4474721068.

The spelling of 12886550 in words is "twelve million, eight hundred eighty-six thousand, five hundred fifty".