12803440 has 60 divisors (see below), whose sum is σ = 32268024. Its totient is φ = 4722432.

The previous prime is 12803423. The next prime is 12803447. The reversal of 12803440 is 4430821.

12803440 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 (12803447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13047 + ... + 13993.

Almost surely, 2^12803440 is an apocalyptic number.

12803440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12803440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16134012).

12803440 is an abundant number, since it is smaller than the sum of its proper divisors (19464584).

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

12803440 is a wasteful number, since it uses less digits than its factorization.

12803440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986 (or 967 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 12803440 is about 3578.1894863185. The cubic root of 12803440 is about 233.9423726405.

The spelling of 12803440 in words is "twelve million, eight hundred three thousand, four hundred forty".