7138226 has 4 divisors (see below), whose sum is σ = 10707342. Its totient is φ = 3569112.

The previous prime is 7138217. The next prime is 7138237. The reversal of 7138226 is 6228317.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5313025 + 1825201 = 2305^2 + 1351^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1784555 + ... + 1784558.

Almost surely, 2^7138226 is an apocalyptic number.

7138226 is a deficient number, since it is larger than the sum of its proper divisors (3569116).

7138226 is a wasteful number, since it uses less digits than its factorization.

7138226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3569115.

The product of its digits is 4032, while the sum is 29.

The square root of 7138226 is about 2671.7458711487. The cubic root of 7138226 is about 192.5440479401.

Subtracting from 7138226 its reverse (6228317), we obtain a palindrome (909909).

The spelling of 7138226 in words is "seven million, one hundred thirty-eight thousand, two hundred twenty-six".