12784650 has 48 divisors (see below), whose sum is σ = 32810400. Its totient is φ = 3290560.

The previous prime is 12784643. The next prime is 12784687. The reversal of 12784650 is 5648721.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2881 + ... + 5819.

It is an arithmetic number, because the mean of its divisors is an integer number (683550).

Almost surely, 2^12784650 is an apocalyptic number.

12784650 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 12784650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16405200).

12784650 is an abundant number, since it is smaller than the sum of its proper divisors (20025750).

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

12784650 is a wasteful number, since it uses less digits than its factorization.

12784650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2983 (or 2978 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 12784650 is about 3575.5628927485. The cubic root of 12784650 is about 233.8278740028.

The spelling of 12784650 in words is "twelve million, seven hundred eighty-four thousand, six hundred fifty".