2885220 has 120 divisors (see below), whose sum is σ = 9818424. Its totient is φ = 705024.

The previous prime is 2885219. The next prime is 2885237. The reversal of 2885220 is 225882.

It can be written as a sum of positive squares in 4 ways, for example, as 82944 + 2802276 = 288^2 + 1674^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 20992 + ... + 21128.

2^2885220 is an apocalyptic number.

2885220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2885220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4909212).

2885220 is an abundant number, since it is smaller than the sum of its proper divisors (6933204).

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

2885220 is a wasteful number, since it uses less digits than its factorization.

2885220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 2885220 is about 1698.5935358408. The cubic root of 2885220 is about 142.3616385536.

The spelling of 2885220 in words is "two million, eight hundred eighty-five thousand, two hundred twenty".