12864380 has 24 divisors (see below), whose sum is σ = 27888000. Its totient is φ = 4979520.

The previous prime is 12864373. The next prime is 12864389. The reversal of 12864380 is 8346821.

12864380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12864389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9755 + ... + 10994.

It is an arithmetic number, because the mean of its divisors is an integer number (1162000).

Almost surely, 2^12864380 is an apocalyptic number.

12864380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12864380 is an abundant number, since it is smaller than the sum of its proper divisors (15023620).

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

12864380 is a wasteful number, since it uses less digits than its factorization.

12864380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20789 (or 20787 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 12864380 is about 3586.6948573861. The cubic root of 12864380 is about 234.3129472465.

The spelling of 12864380 in words is "twelve million, eight hundred sixty-four thousand, three hundred eighty".