12887850 has 48 divisors (see below), whose sum is σ = 32230080. Its totient is φ = 3408000.

The previous prime is 12887827. The next prime is 12887863. The reversal of 12887850 is 5878821.

It is a junction number, because it is equal to n+sod(n) for n = 12887799 and 12887808.

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 23 ways as a sum of consecutive naturals, for example, 22366 + ... + 22934.

It is an arithmetic number, because the mean of its divisors is an integer number (671460).

Almost surely, 2^12887850 is an apocalyptic number.

12887850 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 12887850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16115040).

12887850 is an abundant number, since it is smaller than the sum of its proper divisors (19342230).

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

12887850 is a wasteful number, since it uses less digits than its factorization.

12887850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 39.

The square root of 12887850 is about 3589.9651808896. The cubic root of 12887850 is about 234.4553555580.

It can be divided in two parts, 128 and 87850, that added together give a palindrome (87978).

The spelling of 12887850 in words is "twelve million, eight hundred eighty-seven thousand, eight hundred fifty".