2403906 has 8 divisors (see below), whose sum is σ = 4807824. Its totient is φ = 801300.

The previous prime is 2403889. The next prime is 2403911. The reversal of 2403906 is 6093042.

It is a sphenic number, since it is the product of 3 distinct primes.

2403906 is an admirable number.

It is a Curzon number.

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, 200320 + ... + 200331.

It is an arithmetic number, because the mean of its divisors is an integer number (600978).

2^2403906 is an apocalyptic number.

2403906 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2403906 is a wasteful number, since it uses less digits than its factorization.

2403906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400656.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 2403906 is about 1550.4534820497. The cubic root of 2403906 is about 133.9591841234.

Adding to 2403906 its reverse (6093042), we get a palindrome (8496948).

The spelling of 2403906 in words is "two million, four hundred three thousand, nine hundred six".