2666228 has 6 divisors (see below), whose sum is σ = 4665906. Its totient is φ = 1333112.

The previous prime is 2666227. The next prime is 2666267. The reversal of 2666228 is 8226662.

It can be written as a sum of positive squares in only one way, i.e., 2630884 + 35344 = 1622^2 + 188^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2666194 and 2666203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333275 + ... + 333282.

It is an arithmetic number, because the mean of its divisors is an integer number (777651).

2^2666228 is an apocalyptic number.

It is an amenable number.

2666228 is a deficient number, since it is larger than the sum of its proper divisors (1999678).

2666228 is a wasteful number, since it uses less digits than its factorization.

2666228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666561 (or 666559 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 2666228 is about 1632.8588426438. The cubic root of 2666228 is about 138.6646505912.

The spelling of 2666228 in words is "two million, six hundred sixty-six thousand, two hundred twenty-eight".