2228144788 has 24 divisors (see below), whose sum is σ = 3919500872. Its totient is φ = 1108301184.

The previous prime is 2228144783. The next prime is 2228144827. The reversal of 2228144788 is 8874418222.

It can be written as a sum of positive squares in 4 ways, for example, as 187635204 + 2040509584 = 13698^2 + 45172^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2228144783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 970570 + ... + 972862.

Almost surely, 2^2228144788 is an apocalyptic number.

It is an amenable number.

2228144788 is a deficient number, since it is larger than the sum of its proper divisors (1691356084).

2228144788 is a wasteful number, since it uses less digits than its factorization.

2228144788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3451 (or 3449 counting only the distinct ones).

The product of its digits is 458752, while the sum is 46.

The square root of 2228144788 is about 47203.2285760201. The cubic root of 2228144788 is about 1306.1141550604.

The spelling of 2228144788 in words is "two billion, two hundred twenty-eight million, one hundred forty-four thousand, seven hundred eighty-eight".