2215808 has 32 divisors (see below), whose sum is σ = 5046960. Its totient is φ = 949248.

The previous prime is 2215793. The next prime is 2215823. The reversal of 2215808 is 8085122.

It is an interprime number because it is at equal distance from previous prime (2215793) and next prime (2215823).

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent 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, 341 + ... + 2132.

2^2215808 is an apocalyptic number.

2215808 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2215808 is an abundant number, since it is smaller than the sum of its proper divisors (2831152).

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

2215808 is an equidigital number, since it uses as much as digits as its factorization.

2215808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2494 (or 2482 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 2215808 is about 1488.5590347715. The cubic root of 2215808 is about 130.3699128899.

The spelling of 2215808 in words is "two million, two hundred fifteen thousand, eight hundred eight".