12885100 has 36 divisors (see below), whose sum is σ = 28123200. Its totient is φ = 5124160.

The previous prime is 12885071. The next prime is 12885107. The reversal of 12885100 is 158821.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (12885107) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 26661 + ... + 27139.

It is an arithmetic number, because the mean of its divisors is an integer number (781200).

Almost surely, 2^12885100 is an apocalyptic number.

12885100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12885100 is an abundant number, since it is smaller than the sum of its proper divisors (15238100).

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

12885100 is a wasteful number, since it uses less digits than its factorization.

12885100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762 (or 755 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 12885100 is about 3589.5821483844. The cubic root of 12885100 is about 234.4386784011.

The spelling of 12885100 in words is "twelve million, eight hundred eighty-five thousand, one hundred".