2403816 has 32 divisors (see below), whose sum is σ = 6174240. Its totient is φ = 779328.

The previous prime is 2403809. The next prime is 2403859. The reversal of 2403816 is 6183042.

It is a happy number.

2403816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 466 + ... + 2241.

It is an arithmetic number, because the mean of its divisors is an integer number (192945).

2^2403816 is an apocalyptic number.

It is an amenable number.

2403816 is an abundant number, since it is smaller than the sum of its proper divisors (3770424).

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

2403816 is a wasteful number, since it uses less digits than its factorization.

2403816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2753 (or 2749 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 2403816 is about 1550.4244580114. The cubic root of 2403816 is about 133.9575123336.

Adding to 2403816 its reverse (6183042), we get a palindrome (8586858).

The spelling of 2403816 in words is "two million, four hundred three thousand, eight hundred sixteen".