7638226 has 8 divisors (see below), whose sum is σ = 11571084. Its totient is φ = 3781200.

The previous prime is 7638173. The next prime is 7638227. The reversal of 7638226 is 6228367.

It can be written as a sum of positive squares in 2 ways, for example, as 7568001 + 70225 = 2751^2 + 265^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 7638191 and 7638200.

It is not an unprimeable number, because it can be changed into a prime (7638227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18705 + ... + 19108.

Almost surely, 2^7638226 is an apocalyptic number.

7638226 is a deficient number, since it is larger than the sum of its proper divisors (3932858).

7638226 is a wasteful number, since it uses less digits than its factorization.

7638226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37916.

The product of its digits is 24192, while the sum is 34.

The square root of 7638226 is about 2763.7340682490. The cubic root of 7638226 is about 196.9385947573.

The spelling of 7638226 in words is "seven million, six hundred thirty-eight thousand, two hundred twenty-six".