12563850 has 96 divisors (see below), whose sum is σ = 35622720. Its totient is φ = 2903040.

The previous prime is 12563839. The next prime is 12563851. The reversal of 12563850 is 5836521.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12563851) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32961 + ... + 33339.

It is an arithmetic number, because the mean of its divisors is an integer number (371070).

Almost surely, 2^12563850 is an apocalyptic number.

12563850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12563850 is the 1895-th nonagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12563850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17811360).

12563850 is an abundant number, since it is smaller than the sum of its proper divisors (23058870).

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

12563850 is a wasteful number, since it uses less digits than its factorization.

12563850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 12563850 is about 3544.5521578896. The cubic root of 12563850 is about 232.4739246974.

The spelling of 12563850 in words is "twelve million, five hundred sixty-three thousand, eight hundred fifty".