2888221 has 4 divisors (see below), whose sum is σ = 3300832. Its totient is φ = 2475612.

The previous prime is 2888213. The next prime is 2888231. The reversal of 2888221 is 1228882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2888221 - 2³ = 2888213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2888201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206295 + ... + 206308.

It is an arithmetic number, because the mean of its divisors is an integer number (825208).

2^2888221 is an apocalyptic number.

It is an amenable number.

2888221 is a deficient number, since it is larger than the sum of its proper divisors (412611).

2888221 is an equidigital number, since it uses as much as digits as its factorization.

2888221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412610.

The product of its digits is 4096, while the sum is 31.

The square root of 2888221 is about 1699.4766841590. The cubic root of 2888221 is about 142.4109795904.

The spelling of 2888221 in words is "two million, eight hundred eighty-eight thousand, two hundred twenty-one".