2722220 has 12 divisors (see below), whose sum is σ = 5716704. Its totient is φ = 1088880.

The previous prime is 2722219. The next prime is 2722231. The reversal of 2722220 is 222272.

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, 68036 + ... + 68075.

It is an arithmetic number, because the mean of its divisors is an integer number (476392).

2^2722220 is an apocalyptic number.

2722220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2722220 is an abundant number, since it is smaller than the sum of its proper divisors (2994484).

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

2722220 is a wasteful number, since it uses less digits than its factorization.

2722220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136120 (or 136118 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 2722220 is about 1649.9151493334. The cubic root of 2722220 is about 139.6286074765.

Adding to 2722220 its reverse (222272), we get a palindrome (2944492).

The spelling of 2722220 in words is "two million, seven hundred twenty-two thousand, two hundred twenty".