2688226 has 4 divisors (see below), whose sum is σ = 4032342. Its totient is φ = 1344112.

The previous prime is 2688223. The next prime is 2688233. The reversal of 2688226 is 6228862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6228862 = 2 ⋅3114431.

It can be written as a sum of positive squares in only one way, i.e., 1957201 + 731025 = 1399^2 + 855^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2688191 and 2688200.

It is not an unprimeable number, because it can be changed into a prime (2688221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672055 + ... + 672058.

2^2688226 is an apocalyptic number.

2688226 is a deficient number, since it is larger than the sum of its proper divisors (1344116).

2688226 is a wasteful number, since it uses less digits than its factorization.

2688226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344115.

The product of its digits is 18432, while the sum is 34.

The square root of 2688226 is about 1639.5810440475. The cubic root of 2688226 is about 139.0449624225.

The spelling of 2688226 in words is "two million, six hundred eighty-eight thousand, two hundred twenty-six".