12441640 has 16 divisors (see below), whose sum is σ = 27993780. Its totient is φ = 4976640.

The previous prime is 12441629. The next prime is 12441661. The reversal of 12441640 is 4614421.

12441640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12152196 + 289444 = 3486^2 + 538^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155481 + ... + 155560.

Almost surely, 2^12441640 is an apocalyptic number.

12441640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12441640 is an abundant number, since it is smaller than the sum of its proper divisors (15552140).

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

12441640 is a wasteful number, since it uses less digits than its factorization.

12441640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311052 (or 311048 counting only the distinct ones).

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

The square root of 12441640 is about 3527.2708997184. The cubic root of 12441640 is about 231.7177006305.

The spelling of 12441640 in words is "twelve million, four hundred forty-one thousand, six hundred forty".