7223738 has 4 divisors (see below), whose sum is σ = 10835610. Its totient is φ = 3611868.

The previous prime is 7223737. The next prime is 7223747. The reversal of 7223738 is 8373227.

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., 5678689 + 1545049 = 2383^2 + 1243^2 .

It is not an unprimeable number, because it can be changed into a prime (7223731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1805933 + ... + 1805936.

Almost surely, 2^7223738 is an apocalyptic number.

7223738 is a deficient number, since it is larger than the sum of its proper divisors (3611872).

7223738 is a wasteful number, since it uses less digits than its factorization.

7223738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3611871.

The product of its digits is 14112, while the sum is 32.

The square root of 7223738 is about 2687.7012482789. The cubic root of 7223738 is about 193.3098551223.

The spelling of 7223738 in words is "seven million, two hundred twenty-three thousand, seven hundred thirty-eight".