2228816 has 10 divisors (see below), whose sum is σ = 4318362. Its totient is φ = 1114400.

The previous prime is 2228813. The next prime is 2228867. The reversal of 2228816 is 6188222.

It can be written as a sum of positive squares in only one way, i.e., 2190400 + 38416 = 1480^2 + 196^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2228813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69635 + ... + 69666.

2^2228816 is an apocalyptic number.

It is an amenable number.

2228816 is a deficient number, since it is larger than the sum of its proper divisors (2089546).

2228816 is a wasteful number, since it uses less digits than its factorization.

2228816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139309 (or 139303 counting only the distinct ones).

The product of its digits is 3072, while the sum is 29.

The square root of 2228816 is about 1492.9219671503. The cubic root of 2228816 is about 130.6245294276.

The spelling of 2228816 in words is "two million, two hundred twenty-eight thousand, eight hundred sixteen".