2771220 has 24 divisors (see below), whose sum is σ = 7759584. Its totient is φ = 738976.

The previous prime is 2771213. The next prime is 2771233. The reversal of 2771220 is 221772.

2771220 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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, 23034 + ... + 23153.

It is an arithmetic number, because the mean of its divisors is an integer number (323316).

2^2771220 is an apocalyptic number.

2771220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2771220 is an abundant number, since it is smaller than the sum of its proper divisors (4988364).

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

2771220 is a wasteful number, since it uses less digits than its factorization.

2771220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46199 (or 46197 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 2771220 is about 1664.6981708406. The cubic root of 2771220 is about 140.4614028382.

Adding to 2771220 its reverse (221772), we get a palindrome (2992992).

The spelling of 2771220 in words is "two million, seven hundred seventy-one thousand, two hundred twenty".