2215220 has 24 divisors (see below), whose sum is σ = 5316864. Its totient is φ = 759456.

The previous prime is 2215217. The next prime is 2215237. The reversal of 2215220 is 225122.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 2215195 and 2215204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7772 + ... + 8051.

It is an arithmetic number, because the mean of its divisors is an integer number (221536).

2^2215220 is an apocalyptic number.

2215220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2215220 is an abundant number, since it is smaller than the sum of its proper divisors (3101644).

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

2215220 is a wasteful number, since it uses less digits than its factorization.

2215220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15839 (or 15837 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 2215220 is about 1488.3615152240. The cubic root of 2215220 is about 130.3583799577.

The spelling of 2215220 in words is "two million, two hundred fifteen thousand, two hundred twenty".