2403688 has 16 divisors (see below), whose sum is σ = 5150880. Its totient is φ = 1030128.

The previous prime is 2403679. The next prime is 2403689. The reversal of 2403688 is 8863042.

It is a happy number.

2403688 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2403689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21406 + ... + 21517.

It is an arithmetic number, because the mean of its divisors is an integer number (321930).

2^2403688 is an apocalyptic number.

2403688 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2403688 is an abundant number, since it is smaller than the sum of its proper divisors (2747192).

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

2403688 is a wasteful number, since it uses less digits than its factorization.

2403688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42936 (or 42932 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 2403688 is about 1550.3831784433. The cubic root of 2403688 is about 133.9551346050.

The spelling of 2403688 in words is "two million, four hundred three thousand, six hundred eighty-eight".