12687850 has 24 divisors (see below), whose sum is σ = 26971488. Its totient is φ = 4350000.

The previous prime is 12687847. The next prime is 12687853. The reversal of 12687850 is 5878621.

12687850 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12687847) and next prime (12687853).

12687850 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (12687853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17776 + ... + 18475.

It is an arithmetic number, because the mean of its divisors is an integer number (1123812).

Almost surely, 2^12687850 is an apocalyptic number.

12687850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12687850 is an abundant number, since it is smaller than the sum of its proper divisors (14283638).

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

12687850 is a wasteful number, since it uses less digits than its factorization.

12687850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36270 (or 36265 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 12687850 is about 3562.0008422234. Note that the first 3 decimals coincide. The cubic root of 12687850 is about 233.2362294362.

The spelling of 12687850 in words is "twelve million, six hundred eighty-seven thousand, eight hundred fifty".