12928650 has 72 divisors (see below), whose sum is σ = 37319040. Its totient is φ = 2953440.

The previous prime is 12928637. The next prime is 12928673. The reversal of 12928650 is 5682921.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6471 + ... + 8229.

It is an arithmetic number, because the mean of its divisors is an integer number (518320).

Almost surely, 2^12928650 is an apocalyptic number.

12928650 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 12928650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18659520).

12928650 is an abundant number, since it is smaller than the sum of its proper divisors (24390390).

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

12928650 is a wasteful number, since it uses less digits than its factorization.

12928650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1788 (or 1776 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 12928650 is about 3595.6431969816. The cubic root of 12928650 is about 234.7025056998.

The spelling of 12928650 in words is "twelve million, nine hundred twenty-eight thousand, six hundred fifty".