2918406 has 16 divisors (see below), whose sum is σ = 5854464. Its totient is φ = 969864.

The previous prime is 2918393. The next prime is 2918411. The reversal of 2918406 is 6048192.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2535 + ... + 3501.

It is an arithmetic number, because the mean of its divisors is an integer number (365904).

2^2918406 is an apocalyptic number.

2918406 is an abundant number, since it is smaller than the sum of its proper divisors (2936058).

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

2918406 is a wasteful number, since it uses less digits than its factorization.

2918406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 2918406 is about 1708.3342764225. The cubic root of 2918406 is about 142.9053769506.

The spelling of 2918406 in words is "two million, nine hundred eighteen thousand, four hundred six".