12400850 has 48 divisors (see below), whose sum is σ = 28766016. Its totient is φ = 3864000.

The previous prime is 12400849. The next prime is 12400859. The reversal of 12400850 is 5800421.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12400859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2240 + ... + 5460.

It is an arithmetic number, because the mean of its divisors is an integer number (599292).

Almost surely, 2^12400850 is an apocalyptic number.

12400850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12400850 is an abundant number, since it is smaller than the sum of its proper divisors (16365166).

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

12400850 is a wasteful number, since it uses less digits than its factorization.

12400850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3251 (or 3246 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 12400850 is about 3521.4840621533. The cubic root of 12400850 is about 231.4641940433.

The spelling of 12400850 in words is "twelve million, four hundred thousand, eight hundred fifty".