2215900 has 18 divisors (see below), whose sum is σ = 4808720. Its totient is φ = 886320.

The previous prime is 2215867. The next prime is 2215901. The reversal of 2215900 is 95122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10980 + ... + 11179.

2^2215900 is an apocalyptic number.

2215900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2215900 is an abundant number, since it is smaller than the sum of its proper divisors (2592820).

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

2215900 is a wasteful number, since it uses less digits than its factorization.

2215900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22173 (or 22166 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 2215900 is about 1488.5899368194. The cubic root of 2215900 is about 130.3717171777.

The spelling of 2215900 in words is "two million, two hundred fifteen thousand, nine hundred".