2279220 has 24 divisors (see below), whose sum is σ = 6381984. Its totient is φ = 607776.

The previous prime is 2279161. The next prime is 2279239. The reversal of 2279220 is 229722.

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, 18934 + ... + 19053.

It is an arithmetic number, because the mean of its divisors is an integer number (265916).

2^2279220 is an apocalyptic number.

2279220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2279220 is an abundant number, since it is smaller than the sum of its proper divisors (4102764).

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

2279220 is a wasteful number, since it uses less digits than its factorization.

2279220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37999 (or 37997 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 2279220 is about 1509.7085811507. The cubic root of 2279220 is about 131.6018766497.

The spelling of 2279220 in words is "two million, two hundred seventy-nine thousand, two hundred twenty".