2889220 has 12 divisors (see below), whose sum is σ = 6067404. Its totient is φ = 1155680.

The previous prime is 2889217. The next prime is 2889221. The reversal of 2889220 is 229882.

It can be written as a sum of positive squares in 2 ways, for example, as 1557504 + 1331716 = 1248^2 + 1154^2 .

It is not an unprimeable number, because it can be changed into a prime (2889221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72211 + ... + 72250.

It is an arithmetic number, because the mean of its divisors is an integer number (505617).

2^2889220 is an apocalyptic number.

2889220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2889220 is an abundant number, since it is smaller than the sum of its proper divisors (3178184).

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

2889220 is a wasteful number, since it uses less digits than its factorization.

2889220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144470 (or 144468 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 2889220 is about 1699.7705727539. The cubic root of 2889220 is about 142.4273970978.

It can be divided in two parts, 288 and 9220, that multiplied together give a triangular number (2655360 = T₂₃₀₄).

The spelling of 2889220 in words is "two million, eight hundred eighty-nine thousand, two hundred twenty".