2213908 has 12 divisors (see below), whose sum is σ = 3889620. Its totient is φ = 1102592.

The previous prime is 2213891. The next prime is 2213923. The reversal of 2213908 is 8093122.

It can be written as a sum of positive squares in 2 ways, for example, as 1669264 + 544644 = 1292^2 + 738^2 .

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 3 ways as a sum of consecutive naturals, for example, 228 + ... + 2116.

It is an arithmetic number, because the mean of its divisors is an integer number (324135).

2^2213908 is an apocalyptic number.

It is an amenable number.

2213908 is a deficient number, since it is larger than the sum of its proper divisors (1675712).

2213908 is a wasteful number, since it uses less digits than its factorization.

2213908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186 (or 2184 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 2213908 is about 1487.9206968115. The cubic root of 2213908 is about 130.3326392531.

The spelling of 2213908 in words is "two million, two hundred thirteen thousand, nine hundred eight".