2240406 has 32 divisors (see below), whose sum is σ = 5690880. Its totient is φ = 640008.

The previous prime is 2240389. The next prime is 2240431. The reversal of 2240406 is 6040422.

2240406 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 (18).

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 15 ways as a sum of consecutive naturals, for example, 2586 + ... + 3341.

It is an arithmetic number, because the mean of its divisors is an integer number (177840).

2^2240406 is an apocalyptic number.

2240406 is an abundant number, since it is smaller than the sum of its proper divisors (3450474).

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

2240406 is a wasteful number, since it uses less digits than its factorization.

2240406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5945 (or 5939 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2240406 is about 1496.7985836444. The cubic root of 2240406 is about 130.8505570069.

Adding to 2240406 its reverse (6040422), we get a palindrome (8280828).

The spelling of 2240406 in words is "two million, two hundred forty thousand, four hundred six".