2228518 has 8 divisors (see below), whose sum is σ = 3420648. Its totient is φ = 1088304.

The previous prime is 2228509. The next prime is 2228519. The reversal of 2228518 is 8158222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 2² + 2⁸ + 2¹⁷ + 8 + 5² + 1 + 8⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2228519) 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, 12871 + ... + 13042.

It is an arithmetic number, because the mean of its divisors is an integer number (427581).

2^2228518 is an apocalyptic number.

2228518 is a deficient number, since it is larger than the sum of its proper divisors (1192130).

2228518 is a wasteful number, since it uses less digits than its factorization.

2228518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25958.

The product of its digits is 2560, while the sum is 28.

The square root of 2228518 is about 1492.8221595354. The cubic root of 2228518 is about 130.6187075256.

The spelling of 2228518 in words is "two million, two hundred twenty-eight thousand, five hundred eighteen".